Home / 72,403,463.10-108,607,819.05-21,290,648.70

Finding the Fourth Proportional to 72,403,463.10, 108,607,819.05 and 21,290,648.70

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Solution

The fourth proportional to 72,403,463.10, 108,607,819.05 and 21,290,648.70 is: 31,936,744.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,403,463.10 : 108,607,819.05 = 21,290,648.70 : x
  2. Step 2: Convert to fraction form
    72,403,463.10/108,607,819.05 = 21,290,648.70/x
  3. Step 3: Cross multiply
    72,403,463.10x = 108,607,819.05 × 21,290,648.70
  4. Step 4: Simplify right side
    72,403,463.10x = 2,312,330,921,466,717.50
  5. Step 5: Solve for x
    x = 2,312,330,921,466,717.50/72,403,463.10
  6. Step 6: Final answer
    x = 31,936,744.77

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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.