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Finding the Fourth Proportional to 71,987.60, 107,977.98 and 25,236.92

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Solution

The fourth proportional to 71,987.60, 107,977.98 and 25,236.92 is: 37,854.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,987.60 : 107,977.98 = 25,236.92 : x
  2. Step 2: Convert to fraction form
    71,987.60/107,977.98 = 25,236.92/x
  3. Step 3: Cross multiply
    71,987.60x = 107,977.98 × 25,236.92
  4. Step 4: Simplify right side
    71,987.60x = 2,725,031,643.02
  5. Step 5: Solve for x
    x = 2,725,031,643.02/71,987.60
  6. Step 6: Final answer
    x = 37,854.18

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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.