Home / 99,345.60-137,066.50-56,318.20

Finding the Fourth Proportional to 99,345.60, 137,066.50 and 56,318.20

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Solution

The fourth proportional to 99,345.60, 137,066.50 and 56,318.20 is: 77,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,345.60 : 137,066.50 = 56,318.20 : x
  2. Step 2: Convert to fraction form
    99,345.60/137,066.50 = 56,318.20/x
  3. Step 3: Cross multiply
    99,345.60x = 137,066.50 × 56,318.20
  4. Step 4: Simplify right side
    99,345.60x = 7,719,338,560.30
  5. Step 5: Solve for x
    x = 7,719,338,560.30/99,345.60
  6. Step 6: Final answer
    x = 77,701.87

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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.