Home / 72,815,975,477.40-109,231,238,052.90-19,757,850,821.40

Finding the Fourth Proportional to 72,815,975,477.40, 109,231,238,052.90 and 19,757,850,821.40

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Solution

The fourth proportional to 72,815,975,477.40, 109,231,238,052.90 and 19,757,850,821.40 is: 29,638,750,182.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,815,975,477.40 : 109,231,238,052.90 = 19,757,850,821.40 : x
  2. Step 2: Convert to fraction form
    72,815,975,477.40/109,231,238,052.90 = 19,757,850,821.40/x
  3. Step 3: Cross multiply
    72,815,975,477.40x = 109,231,238,052.90 × 19,757,850,821.40
  4. Step 4: Simplify right side
    72,815,975,477.40x = 2,158,174,506,486,029,352,960
  5. Step 5: Solve for x
    x = 2,158,174,506,486,029,352,960/72,815,975,477.40
  6. Step 6: Final answer
    x = 29,638,750,182.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.