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Finding the Fourth Proportional to 92,414.40, 138,686.40 and 39,861.60

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Solution

The fourth proportional to 92,414.40, 138,686.40 and 39,861.60 is: 59,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,414.40 : 138,686.40 = 39,861.60 : x
  2. Step 2: Convert to fraction form
    92,414.40/138,686.40 = 39,861.60/x
  3. Step 3: Cross multiply
    92,414.40x = 138,686.40 × 39,861.60
  4. Step 4: Simplify right side
    92,414.40x = 5,528,261,802.24
  5. Step 5: Solve for x
    x = 5,528,261,802.24/92,414.40
  6. Step 6: Final answer
    x = 59,820.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.