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Finding the Fourth Proportional to 72,502,401.60, 108,753,602.40 and 43,836,955.20

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Solution

The fourth proportional to 72,502,401.60, 108,753,602.40 and 43,836,955.20 is: 65,755,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,502,401.60 : 108,753,602.40 = 43,836,955.20 : x
  2. Step 2: Convert to fraction form
    72,502,401.60/108,753,602.40 = 43,836,955.20/x
  3. Step 3: Cross multiply
    72,502,401.60x = 108,753,602.40 × 43,836,955.20
  4. Step 4: Simplify right side
    72,502,401.60x = 4,767,426,796,247,413
  5. Step 5: Solve for x
    x = 4,767,426,796,247,413/72,502,401.60
  6. Step 6: Final answer
    x = 65,755,432.80

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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.