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Finding the Fourth Proportional to 72,501.60, 108,752.40 and 52,543.20

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Solution

The fourth proportional to 72,501.60, 108,752.40 and 52,543.20 is: 78,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,501.60 : 108,752.40 = 52,543.20 : x
  2. Step 2: Convert to fraction form
    72,501.60/108,752.40 = 52,543.20/x
  3. Step 3: Cross multiply
    72,501.60x = 108,752.40 × 52,543.20
  4. Step 4: Simplify right side
    72,501.60x = 5,714,199,103.68
  5. Step 5: Solve for x
    x = 5,714,199,103.68/72,501.60
  6. Step 6: Final answer
    x = 78,814.80

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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.