Home / 80,834,749.20-121,252,123.80-39,913,792.20

Finding the Fourth Proportional to 80,834,749.20, 121,252,123.80 and 39,913,792.20

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Solution

The fourth proportional to 80,834,749.20, 121,252,123.80 and 39,913,792.20 is: 59,870,688.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,834,749.20 : 121,252,123.80 = 39,913,792.20 : x
  2. Step 2: Convert to fraction form
    80,834,749.20/121,252,123.80 = 39,913,792.20/x
  3. Step 3: Cross multiply
    80,834,749.20x = 121,252,123.80 × 39,913,792.20
  4. Step 4: Simplify right side
    80,834,749.20x = 4,839,632,073,161,875
  5. Step 5: Solve for x
    x = 4,839,632,073,161,875/80,834,749.20
  6. Step 6: Final answer
    x = 59,870,688.30

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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.