Home / 77,378,162.79-106,781,861.05-42,570,105.90

Finding the Fourth Proportional to 77,378,162.79, 106,781,861.05 and 42,570,105.90

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Solution

The fourth proportional to 77,378,162.79, 106,781,861.05 and 42,570,105.90 is: 58,746,744.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,378,162.79 : 106,781,861.05 = 42,570,105.90 : x
  2. Step 2: Convert to fraction form
    77,378,162.79/106,781,861.05 = 42,570,105.90/x
  3. Step 3: Cross multiply
    77,378,162.79x = 106,781,861.05 × 42,570,105.90
  4. Step 4: Simplify right side
    77,378,162.79x = 4,545,715,132,590,728
  5. Step 5: Solve for x
    x = 4,545,715,132,590,728/77,378,162.79
  6. Step 6: Final answer
    x = 58,746,744.15

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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.