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Finding the Fourth Proportional to 101,959.70, 140,708.33 and 56,641.11

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Solution

The fourth proportional to 101,959.70, 140,708.33 and 56,641.11 is: 78,166.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,959.70 : 140,708.33 = 56,641.11 : x
  2. Step 2: Convert to fraction form
    101,959.70/140,708.33 = 56,641.11/x
  3. Step 3: Cross multiply
    101,959.70x = 140,708.33 × 56,641.11
  4. Step 4: Simplify right side
    101,959.70x = 7,969,875,714.24
  5. Step 5: Solve for x
    x = 7,969,875,714.24/101,959.70
  6. Step 6: Final answer
    x = 78,166.92

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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.