Home / 91,417.01-137,140.85-31,443.08

Finding the Fourth Proportional to 91,417.01, 137,140.85 and 31,443.08

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Solution

The fourth proportional to 91,417.01, 137,140.85 and 31,443.08 is: 47,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,417.01 : 137,140.85 = 31,443.08 : x
  2. Step 2: Convert to fraction form
    91,417.01/137,140.85 = 31,443.08/x
  3. Step 3: Cross multiply
    91,417.01x = 137,140.85 × 31,443.08
  4. Step 4: Simplify right side
    91,417.01x = 4,312,129,874.90
  5. Step 5: Solve for x
    x = 4,312,129,874.90/91,417.01
  6. Step 6: Final answer
    x = 47,169.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.