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Finding the Fourth Proportional to 75,074.90, 112,547.55 and 38,138.90

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Solution

The fourth proportional to 75,074.90, 112,547.55 and 38,138.90 is: 57,175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,074.90 : 112,547.55 = 38,138.90 : x
  2. Step 2: Convert to fraction form
    75,074.90/112,547.55 = 38,138.90/x
  3. Step 3: Cross multiply
    75,074.90x = 112,547.55 × 38,138.90
  4. Step 4: Simplify right side
    75,074.90x = 4,292,439,754.70
  5. Step 5: Solve for x
    x = 4,292,439,754.70/75,074.90
  6. Step 6: Final answer
    x = 57,175.43

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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.