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Finding the Fourth Proportional to 85,042.70, 117,373.31 and 49,254.47

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Solution

The fourth proportional to 85,042.70, 117,373.31 and 49,254.47 is: 67,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,042.70 : 117,373.31 = 49,254.47 : x
  2. Step 2: Convert to fraction form
    85,042.70/117,373.31 = 49,254.47/x
  3. Step 3: Cross multiply
    85,042.70x = 117,373.31 × 49,254.47
  4. Step 4: Simplify right side
    85,042.70x = 5,781,159,343.06
  5. Step 5: Solve for x
    x = 5,781,159,343.06/85,042.70
  6. Step 6: Final answer
    x = 67,979.49

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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.