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Finding the Fourth Proportional to 60,358.75, 90,543.12 and 18,805.75

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Solution

The fourth proportional to 60,358.75, 90,543.12 and 18,805.75 is: 28,210.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,358.75 : 90,543.12 = 18,805.75 : x
  2. Step 2: Convert to fraction form
    60,358.75/90,543.12 = 18,805.75/x
  3. Step 3: Cross multiply
    60,358.75x = 90,543.12 × 18,805.75
  4. Step 4: Simplify right side
    60,358.75x = 1,702,731,278.94
  5. Step 5: Solve for x
    x = 1,702,731,278.94/60,358.75
  6. Step 6: Final answer
    x = 28,210.18

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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.