Home / 90,970.48-136,470.32-38,387.72

Finding the Fourth Proportional to 90,970.48, 136,470.32 and 38,387.72

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Solution

The fourth proportional to 90,970.48, 136,470.32 and 38,387.72 is: 57,587.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,970.48 : 136,470.32 = 38,387.72 : x
  2. Step 2: Convert to fraction form
    90,970.48/136,470.32 = 38,387.72/x
  3. Step 3: Cross multiply
    90,970.48x = 136,470.32 × 38,387.72
  4. Step 4: Simplify right side
    90,970.48x = 5,238,784,432.47
  5. Step 5: Solve for x
    x = 5,238,784,432.47/90,970.48
  6. Step 6: Final answer
    x = 57,587.74

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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.