Home / 72,821,985.24-100,495,821.06-39,784,374.21

Finding the Fourth Proportional to 72,821,985.24, 100,495,821.06 and 39,784,374.21

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Solution

The fourth proportional to 72,821,985.24, 100,495,821.06 and 39,784,374.21 is: 54,903,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,821,985.24 : 100,495,821.06 = 39,784,374.21 : x
  2. Step 2: Convert to fraction form
    72,821,985.24/100,495,821.06 = 39,784,374.21/x
  3. Step 3: Cross multiply
    72,821,985.24x = 100,495,821.06 × 39,784,374.21
  4. Step 4: Simplify right side
    72,821,985.24x = 3,998,163,351,833,044.50
  5. Step 5: Solve for x
    x = 3,998,163,351,833,044.50/72,821,985.24
  6. Step 6: Final answer
    x = 54,903,245.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.