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Finding the Fourth Proportional to 72,818.68, 109,254.33 and 25,440.77

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Solution

The fourth proportional to 72,818.68, 109,254.33 and 25,440.77 is: 38,170.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,818.68 : 109,254.33 = 25,440.77 : x
  2. Step 2: Convert to fraction form
    72,818.68/109,254.33 = 25,440.77/x
  3. Step 3: Cross multiply
    72,818.68x = 109,254.33 × 25,440.77
  4. Step 4: Simplify right side
    72,818.68x = 2,779,514,281.03
  5. Step 5: Solve for x
    x = 2,779,514,281.03/72,818.68
  6. Step 6: Final answer
    x = 38,170.35

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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.