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Finding the Fourth Proportional to 78,349.52, 117,499.44 and 25,746.80

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Solution

The fourth proportional to 78,349.52, 117,499.44 and 25,746.80 is: 38,612.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,349.52 : 117,499.44 = 25,746.80 : x
  2. Step 2: Convert to fraction form
    78,349.52/117,499.44 = 25,746.80/x
  3. Step 3: Cross multiply
    78,349.52x = 117,499.44 × 25,746.80
  4. Step 4: Simplify right side
    78,349.52x = 3,025,234,581.79
  5. Step 5: Solve for x
    x = 3,025,234,581.79/78,349.52
  6. Step 6: Final answer
    x = 38,612.04

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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.