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Finding the Fourth Proportional to 101,024.35, 139,419.80 and 55,702.18

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Solution

The fourth proportional to 101,024.35, 139,419.80 and 55,702.18 is: 76,872.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,024.35 : 139,419.80 = 55,702.18 : x
  2. Step 2: Convert to fraction form
    101,024.35/139,419.80 = 55,702.18/x
  3. Step 3: Cross multiply
    101,024.35x = 139,419.80 × 55,702.18
  4. Step 4: Simplify right side
    101,024.35x = 7,765,986,899.81
  5. Step 5: Solve for x
    x = 7,765,986,899.81/101,024.35
  6. Step 6: Final answer
    x = 76,872.43

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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.