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Finding the Fourth Proportional to 55,909.44, 77,154.72 and 30,757.44

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Solution

The fourth proportional to 55,909.44, 77,154.72 and 30,757.44 is: 42,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,909.44 : 77,154.72 = 30,757.44 : x
  2. Step 2: Convert to fraction form
    55,909.44/77,154.72 = 30,757.44/x
  3. Step 3: Cross multiply
    55,909.44x = 77,154.72 × 30,757.44
  4. Step 4: Simplify right side
    55,909.44x = 2,373,081,671.12
  5. Step 5: Solve for x
    x = 2,373,081,671.12/55,909.44
  6. Step 6: Final answer
    x = 42,445.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.