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Finding the Fourth Proportional to 57,218.40, 85,897.80 and 36,158.40

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Solution

The fourth proportional to 57,218.40, 85,897.80 and 36,158.40 is: 54,281.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,218.40 : 85,897.80 = 36,158.40 : x
  2. Step 2: Convert to fraction form
    57,218.40/85,897.80 = 36,158.40/x
  3. Step 3: Cross multiply
    57,218.40x = 85,897.80 × 36,158.40
  4. Step 4: Simplify right side
    57,218.40x = 3,105,927,011.52
  5. Step 5: Solve for x
    x = 3,105,927,011.52/57,218.40
  6. Step 6: Final answer
    x = 54,281.96

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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.