Home / 91,555.40-137,279.64-38,937.80

Finding the Fourth Proportional to 91,555.40, 137,279.64 and 38,937.80

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Solution

The fourth proportional to 91,555.40, 137,279.64 and 38,937.80 is: 58,383.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,555.40 : 137,279.64 = 38,937.80 : x
  2. Step 2: Convert to fraction form
    91,555.40/137,279.64 = 38,937.80/x
  3. Step 3: Cross multiply
    91,555.40x = 137,279.64 × 38,937.80
  4. Step 4: Simplify right side
    91,555.40x = 5,345,367,166.39
  5. Step 5: Solve for x
    x = 5,345,367,166.39/91,555.40
  6. Step 6: Final answer
    x = 58,383.96

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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.