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Finding the Fourth Proportional to 60,600.20, 90,901.76 and 20,619.11

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Solution

The fourth proportional to 60,600.20, 90,901.76 and 20,619.11 is: 30,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,600.20 : 90,901.76 = 20,619.11 : x
  2. Step 2: Convert to fraction form
    60,600.20/90,901.76 = 20,619.11/x
  3. Step 3: Cross multiply
    60,600.20x = 90,901.76 × 20,619.11
  4. Step 4: Simplify right side
    60,600.20x = 1,874,312,831.03
  5. Step 5: Solve for x
    x = 1,874,312,831.03/60,600.20
  6. Step 6: Final answer
    x = 30,929.16

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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.