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Finding the Fourth Proportional to 73,009.46, 109,514.19 and 28,657.10

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Solution

The fourth proportional to 73,009.46, 109,514.19 and 28,657.10 is: 42,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,009.46 : 109,514.19 = 28,657.10 : x
  2. Step 2: Convert to fraction form
    73,009.46/109,514.19 = 28,657.10/x
  3. Step 3: Cross multiply
    73,009.46x = 109,514.19 × 28,657.10
  4. Step 4: Simplify right side
    73,009.46x = 3,138,359,094.25
  5. Step 5: Solve for x
    x = 3,138,359,094.25/73,009.46
  6. Step 6: Final answer
    x = 42,985.65

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Similar ratio
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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.