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Finding the Fourth Proportional to 56,167.68, 84,242.88 and 18,728.40

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Solution

The fourth proportional to 56,167.68, 84,242.88 and 18,728.40 is: 28,089.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,167.68 : 84,242.88 = 18,728.40 : x
  2. Step 2: Convert to fraction form
    56,167.68/84,242.88 = 18,728.40/x
  3. Step 3: Cross multiply
    56,167.68x = 84,242.88 × 18,728.40
  4. Step 4: Simplify right side
    56,167.68x = 1,577,734,353.79
  5. Step 5: Solve for x
    x = 1,577,734,353.79/56,167.68
  6. Step 6: Final answer
    x = 28,089.72

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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.