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Finding the Fourth Proportional to 60,615.32, 90,920.84 and 18,493.70

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Solution

The fourth proportional to 60,615.32, 90,920.84 and 18,493.70 is: 27,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,615.32 : 90,920.84 = 18,493.70 : x
  2. Step 2: Convert to fraction form
    60,615.32/90,920.84 = 18,493.70/x
  3. Step 3: Cross multiply
    60,615.32x = 90,920.84 × 18,493.70
  4. Step 4: Simplify right side
    60,615.32x = 1,681,462,646.24
  5. Step 5: Solve for x
    x = 1,681,462,646.24/60,615.32
  6. Step 6: Final answer
    x = 27,739.90

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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.