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Finding the Fourth Proportional to 99,499.86, 137,302.86 and 56,480.22

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Solution

The fourth proportional to 99,499.86, 137,302.86 and 56,480.22 is: 77,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,499.86 : 137,302.86 = 56,480.22 : x
  2. Step 2: Convert to fraction form
    99,499.86/137,302.86 = 56,480.22/x
  3. Step 3: Cross multiply
    99,499.86x = 137,302.86 × 56,480.22
  4. Step 4: Simplify right side
    99,499.86x = 7,754,895,739.43
  5. Step 5: Solve for x
    x = 7,754,895,739.43/99,499.86
  6. Step 6: Final answer
    x = 77,938.76

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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.