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Finding the Fourth Proportional to 62,346.64, 85,990.74 and 39,689.32

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Solution

The fourth proportional to 62,346.64, 85,990.74 and 39,689.32 is: 54,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,346.64 : 85,990.74 = 39,689.32 : x
  2. Step 2: Convert to fraction form
    62,346.64/85,990.74 = 39,689.32/x
  3. Step 3: Cross multiply
    62,346.64x = 85,990.74 × 39,689.32
  4. Step 4: Simplify right side
    62,346.64x = 3,412,913,996.90
  5. Step 5: Solve for x
    x = 3,412,913,996.90/62,346.64
  6. Step 6: Final answer
    x = 54,740.95

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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.