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Finding the Fourth Proportional to 88,689.38, 122,393.93 and 48,405.72

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Solution

The fourth proportional to 88,689.38, 122,393.93 and 48,405.72 is: 66,801.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,689.38 : 122,393.93 = 48,405.72 : x
  2. Step 2: Convert to fraction form
    88,689.38/122,393.93 = 48,405.72/x
  3. Step 3: Cross multiply
    88,689.38x = 122,393.93 × 48,405.72
  4. Step 4: Simplify right side
    88,689.38x = 5,924,566,063.25
  5. Step 5: Solve for x
    x = 5,924,566,063.25/88,689.38
  6. Step 6: Final answer
    x = 66,801.31

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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.