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Finding the Fourth Proportional to 83,652.12, 115,440 and 45,411.64

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Solution

The fourth proportional to 83,652.12, 115,440 and 45,411.64 is: 62,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,652.12 : 115,440 = 45,411.64 : x
  2. Step 2: Convert to fraction form
    83,652.12/115,440 = 45,411.64/x
  3. Step 3: Cross multiply
    83,652.12x = 115,440 × 45,411.64
  4. Step 4: Simplify right side
    83,652.12x = 5,242,319,721.60
  5. Step 5: Solve for x
    x = 5,242,319,721.60/83,652.12
  6. Step 6: Final answer
    x = 62,668.10

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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.