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Finding the Fourth Proportional to 60,220.72, 90,332.57 and 20,240.30

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Solution

The fourth proportional to 60,220.72, 90,332.57 and 20,240.30 is: 30,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,220.72 : 90,332.57 = 20,240.30 : x
  2. Step 2: Convert to fraction form
    60,220.72/90,332.57 = 20,240.30/x
  3. Step 3: Cross multiply
    60,220.72x = 90,332.57 × 20,240.30
  4. Step 4: Simplify right side
    60,220.72x = 1,828,358,316.57
  5. Step 5: Solve for x
    x = 1,828,358,316.57/60,220.72
  6. Step 6: Final answer
    x = 30,360.95

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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.