Home / 99,505.32-137,309.76-56,479.74

Finding the Fourth Proportional to 99,505.32, 137,309.76 and 56,479.74

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Solution

The fourth proportional to 99,505.32, 137,309.76 and 56,479.74 is: 77,937.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,505.32 : 137,309.76 = 56,479.74 : x
  2. Step 2: Convert to fraction form
    99,505.32/137,309.76 = 56,479.74/x
  3. Step 3: Cross multiply
    99,505.32x = 137,309.76 × 56,479.74
  4. Step 4: Simplify right side
    99,505.32x = 7,755,219,544.26
  5. Step 5: Solve for x
    x = 7,755,219,544.26/99,505.32
  6. Step 6: Final answer
    x = 77,937.74

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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.