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Finding the Fourth Proportional to 78,592.48, 117,888.72 and 25,987.84

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Solution

The fourth proportional to 78,592.48, 117,888.72 and 25,987.84 is: 38,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,592.48 : 117,888.72 = 25,987.84 : x
  2. Step 2: Convert to fraction form
    78,592.48/117,888.72 = 25,987.84/x
  3. Step 3: Cross multiply
    78,592.48x = 117,888.72 × 25,987.84
  4. Step 4: Simplify right side
    78,592.48x = 3,063,673,193.16
  5. Step 5: Solve for x
    x = 3,063,673,193.16/78,592.48
  6. Step 6: Final answer
    x = 38,981.76

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Similar ratio
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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.