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Finding the Fourth Proportional to 60,145.39, 90,158.55 and 28,499.50

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Solution

The fourth proportional to 60,145.39, 90,158.55 and 28,499.50 is: 42,721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,145.39 : 90,158.55 = 28,499.50 : x
  2. Step 2: Convert to fraction form
    60,145.39/90,158.55 = 28,499.50/x
  3. Step 3: Cross multiply
    60,145.39x = 90,158.55 × 28,499.50
  4. Step 4: Simplify right side
    60,145.39x = 2,569,473,595.73
  5. Step 5: Solve for x
    x = 2,569,473,595.73/60,145.39
  6. Step 6: Final answer
    x = 42,721.04

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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.