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Finding the Fourth Proportional to 109,760, 151,475.28 and 62,012.12

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Solution

The fourth proportional to 109,760, 151,475.28 and 62,012.12 is: 85,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,760 : 151,475.28 = 62,012.12 : x
  2. Step 2: Convert to fraction form
    109,760/151,475.28 = 62,012.12/x
  3. Step 3: Cross multiply
    109,760x = 151,475.28 × 62,012.12
  4. Step 4: Simplify right side
    109,760x = 9,393,303,240.39
  5. Step 5: Solve for x
    x = 9,393,303,240.39/109,760
  6. Step 6: Final answer
    x = 85,580.39

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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.