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Finding the Fourth Proportional to 61,615.64, 85,032.63 and 36,121.70

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Solution

The fourth proportional to 61,615.64, 85,032.63 and 36,121.70 is: 49,849.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,615.64 : 85,032.63 = 36,121.70 : x
  2. Step 2: Convert to fraction form
    61,615.64/85,032.63 = 36,121.70/x
  3. Step 3: Cross multiply
    61,615.64x = 85,032.63 × 36,121.70
  4. Step 4: Simplify right side
    61,615.64x = 3,071,522,725.91
  5. Step 5: Solve for x
    x = 3,071,522,725.91/61,615.64
  6. Step 6: Final answer
    x = 49,849.73

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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.