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Finding the Fourth Proportional to 101,040.74, 139,444.17 and 55,722.86

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Solution

The fourth proportional to 101,040.74, 139,444.17 and 55,722.86 is: 76,901.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,040.74 : 139,444.17 = 55,722.86 : x
  2. Step 2: Convert to fraction form
    101,040.74/139,444.17 = 55,722.86/x
  3. Step 3: Cross multiply
    101,040.74x = 139,444.17 × 55,722.86
  4. Step 4: Simplify right side
    101,040.74x = 7,770,227,962.73
  5. Step 5: Solve for x
    x = 7,770,227,962.73/101,040.74
  6. Step 6: Final answer
    x = 76,901.93

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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.