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Finding the Fourth Proportional to 53,776,867.70, 80,665,301.55 and 19,701,658.10

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Solution

The fourth proportional to 53,776,867.70, 80,665,301.55 and 19,701,658.10 is: 29,552,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,776,867.70 : 80,665,301.55 = 19,701,658.10 : x
  2. Step 2: Convert to fraction form
    53,776,867.70/80,665,301.55 = 19,701,658.10/x
  3. Step 3: Cross multiply
    53,776,867.70x = 80,665,301.55 × 19,701,658.10
  4. Step 4: Simplify right side
    53,776,867.70x = 1,589,240,191,671,500
  5. Step 5: Solve for x
    x = 1,589,240,191,671,500/53,776,867.70
  6. Step 6: Final answer
    x = 29,552,487.15

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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.