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Finding the Fourth Proportional to 72,000.40, 108,130.20 and 52,301.20

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Solution

The fourth proportional to 72,000.40, 108,130.20 and 52,301.20 is: 78,545.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,000.40 : 108,130.20 = 52,301.20 : x
  2. Step 2: Convert to fraction form
    72,000.40/108,130.20 = 52,301.20/x
  3. Step 3: Cross multiply
    72,000.40x = 108,130.20 × 52,301.20
  4. Step 4: Simplify right side
    72,000.40x = 5,655,339,216.24
  5. Step 5: Solve for x
    x = 5,655,339,216.24/72,000.40
  6. Step 6: Final answer
    x = 78,545.94

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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.