Home / 77,378,213.32-106,781,930.85-42,570,157.03

Finding the Fourth Proportional to 77,378,213.32, 106,781,930.85 and 42,570,157.03

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Solution

The fourth proportional to 77,378,213.32, 106,781,930.85 and 42,570,157.03 is: 58,746,814.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,378,213.32 : 106,781,930.85 = 42,570,157.03 : x
  2. Step 2: Convert to fraction form
    77,378,213.32/106,781,930.85 = 42,570,157.03/x
  3. Step 3: Cross multiply
    77,378,213.32x = 106,781,930.85 × 42,570,157.03
  4. Step 4: Simplify right side
    77,378,213.32x = 4,545,723,564,251,101
  5. Step 5: Solve for x
    x = 4,545,723,564,251,101/77,378,213.32
  6. Step 6: Final answer
    x = 58,746,814.76

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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.