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Finding the Fourth Proportional to 53,779.60, 80,863.80 and 52,613.20

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Solution

The fourth proportional to 53,779.60, 80,863.80 and 52,613.20 is: 79,109.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,779.60 : 80,863.80 = 52,613.20 : x
  2. Step 2: Convert to fraction form
    53,779.60/80,863.80 = 52,613.20/x
  3. Step 3: Cross multiply
    53,779.60x = 80,863.80 × 52,613.20
  4. Step 4: Simplify right side
    53,779.60x = 4,254,503,282.16
  5. Step 5: Solve for x
    x = 4,254,503,282.16/53,779.60
  6. Step 6: Final answer
    x = 79,109.98

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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.