Home / 91,430.13-137,079.57-38,810.91

Finding the Fourth Proportional to 91,430.13, 137,079.57 and 38,810.91

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Solution

The fourth proportional to 91,430.13, 137,079.57 and 38,810.91 is: 58,188.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,430.13 : 137,079.57 = 38,810.91 : x
  2. Step 2: Convert to fraction form
    91,430.13/137,079.57 = 38,810.91/x
  3. Step 3: Cross multiply
    91,430.13x = 137,079.57 × 38,810.91
  4. Step 4: Simplify right side
    91,430.13x = 5,320,182,854.11
  5. Step 5: Solve for x
    x = 5,320,182,854.11/91,430.13
  6. Step 6: Final answer
    x = 58,188.51

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1.5x scale

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.