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Finding the Fourth Proportional to 88,663.68, 122,256.48 and 72,480.69

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Solution

The fourth proportional to 88,663.68, 122,256.48 and 72,480.69 is: 99,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,663.68 : 122,256.48 = 72,480.69 : x
  2. Step 2: Convert to fraction form
    88,663.68/122,256.48 = 72,480.69/x
  3. Step 3: Cross multiply
    88,663.68x = 122,256.48 × 72,480.69
  4. Step 4: Simplify right side
    88,663.68x = 8,861,234,027.37
  5. Step 5: Solve for x
    x = 8,861,234,027.37/88,663.68
  6. Step 6: Final answer
    x = 99,942.10

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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.