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Finding the Fourth Proportional to 88,645.92, 122,340.78 and 54,210.78

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Solution

The fourth proportional to 88,645.92, 122,340.78 and 54,210.78 is: 74,816.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,645.92 : 122,340.78 = 54,210.78 : x
  2. Step 2: Convert to fraction form
    88,645.92/122,340.78 = 54,210.78/x
  3. Step 3: Cross multiply
    88,645.92x = 122,340.78 × 54,210.78
  4. Step 4: Simplify right side
    88,645.92x = 6,632,189,109.61
  5. Step 5: Solve for x
    x = 6,632,189,109.61/88,645.92
  6. Step 6: Final answer
    x = 74,816.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.