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Finding the Fourth Proportional to 75,037.28, 112,572.56 and 28,290.56

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Solution

The fourth proportional to 75,037.28, 112,572.56 and 28,290.56 is: 42,442.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,037.28 : 112,572.56 = 28,290.56 : x
  2. Step 2: Convert to fraction form
    75,037.28/112,572.56 = 28,290.56/x
  3. Step 3: Cross multiply
    75,037.28x = 112,572.56 × 28,290.56
  4. Step 4: Simplify right side
    75,037.28x = 3,184,740,763.03
  5. Step 5: Solve for x
    x = 3,184,740,763.03/75,037.28
  6. Step 6: Final answer
    x = 42,442.11

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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.