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Finding the Fourth Proportional to 88,899.60, 122,470.20 and 61,993.20

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Solution

The fourth proportional to 88,899.60, 122,470.20 and 61,993.20 is: 85,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,899.60 : 122,470.20 = 61,993.20 : x
  2. Step 2: Convert to fraction form
    88,899.60/122,470.20 = 61,993.20/x
  3. Step 3: Cross multiply
    88,899.60x = 122,470.20 × 61,993.20
  4. Step 4: Simplify right side
    88,899.60x = 7,592,319,602.64
  5. Step 5: Solve for x
    x = 7,592,319,602.64/88,899.60
  6. Step 6: Final answer
    x = 85,403.30

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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.