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Finding the Fourth Proportional to 62,757, 94,147.10 and 20,639.40

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Solution

The fourth proportional to 62,757, 94,147.10 and 20,639.40 is: 30,962.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,757 : 94,147.10 = 20,639.40 : x
  2. Step 2: Convert to fraction form
    62,757/94,147.10 = 20,639.40/x
  3. Step 3: Cross multiply
    62,757x = 94,147.10 × 20,639.40
  4. Step 4: Simplify right side
    62,757x = 1,943,139,655.74
  5. Step 5: Solve for x
    x = 1,943,139,655.74/62,757
  6. Step 6: Final answer
    x = 30,962.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.