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Finding the Fourth Proportional to 88,939.20, 133,484.40 and 36,386.40

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Solution

The fourth proportional to 88,939.20, 133,484.40 and 36,386.40 is: 54,610.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,939.20 : 133,484.40 = 36,386.40 : x
  2. Step 2: Convert to fraction form
    88,939.20/133,484.40 = 36,386.40/x
  3. Step 3: Cross multiply
    88,939.20x = 133,484.40 × 36,386.40
  4. Step 4: Simplify right side
    88,939.20x = 4,857,016,772.16
  5. Step 5: Solve for x
    x = 4,857,016,772.16/88,939.20
  6. Step 6: Final answer
    x = 54,610.53

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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.