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Finding the Fourth Proportional to 75,113.70, 112,685.16 and 22,518.78

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Solution

The fourth proportional to 75,113.70, 112,685.16 and 22,518.78 is: 33,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,113.70 : 112,685.16 = 22,518.78 : x
  2. Step 2: Convert to fraction form
    75,113.70/112,685.16 = 22,518.78/x
  3. Step 3: Cross multiply
    75,113.70x = 112,685.16 × 22,518.78
  4. Step 4: Simplify right side
    75,113.70x = 2,537,532,327.30
  5. Step 5: Solve for x
    x = 2,537,532,327.30/75,113.70
  6. Step 6: Final answer
    x = 33,782.55

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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.