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Finding the Fourth Proportional to 56,543.20, 84,814.80 and 25,439.20

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Solution

The fourth proportional to 56,543.20, 84,814.80 and 25,439.20 is: 38,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,543.20 : 84,814.80 = 25,439.20 : x
  2. Step 2: Convert to fraction form
    56,543.20/84,814.80 = 25,439.20/x
  3. Step 3: Cross multiply
    56,543.20x = 84,814.80 × 25,439.20
  4. Step 4: Simplify right side
    56,543.20x = 2,157,620,660.16
  5. Step 5: Solve for x
    x = 2,157,620,660.16/56,543.20
  6. Step 6: Final answer
    x = 38,158.80

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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.