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Finding the Fourth Proportional to 60,507.92, 90,756.76 and 21,060.88

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Solution

The fourth proportional to 60,507.92, 90,756.76 and 21,060.88 is: 31,589.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,507.92 : 90,756.76 = 21,060.88 : x
  2. Step 2: Convert to fraction form
    60,507.92/90,756.76 = 21,060.88/x
  3. Step 3: Cross multiply
    60,507.92x = 90,756.76 × 21,060.88
  4. Step 4: Simplify right side
    60,507.92x = 1,911,417,231.55
  5. Step 5: Solve for x
    x = 1,911,417,231.55/60,507.92
  6. Step 6: Final answer
    x = 31,589.54

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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.