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Finding the Fourth Proportional to 83,690.16, 115,489.32 and 45,962.16

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Solution

The fourth proportional to 83,690.16, 115,489.32 and 45,962.16 is: 63,426.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,690.16 : 115,489.32 = 45,962.16 : x
  2. Step 2: Convert to fraction form
    83,690.16/115,489.32 = 45,962.16/x
  3. Step 3: Cross multiply
    83,690.16x = 115,489.32 × 45,962.16
  4. Step 4: Simplify right side
    83,690.16x = 5,308,138,604.13
  5. Step 5: Solve for x
    x = 5,308,138,604.13/83,690.16
  6. Step 6: Final answer
    x = 63,426.08

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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.