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Finding the Fourth Proportional to 60,439.75, 90,659.62 and 18,886.75

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Solution

The fourth proportional to 60,439.75, 90,659.62 and 18,886.75 is: 28,330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,439.75 : 90,659.62 = 18,886.75 : x
  2. Step 2: Convert to fraction form
    60,439.75/90,659.62 = 18,886.75/x
  3. Step 3: Cross multiply
    60,439.75x = 90,659.62 × 18,886.75
  4. Step 4: Simplify right side
    60,439.75x = 1,712,265,578.04
  5. Step 5: Solve for x
    x = 1,712,265,578.04/60,439.75
  6. Step 6: Final answer
    x = 28,330.12

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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.