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Finding the Fourth Proportional to 83,969.55, 115,888.57 and 48,158.79

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Solution

The fourth proportional to 83,969.55, 115,888.57 and 48,158.79 is: 66,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,969.55 : 115,888.57 = 48,158.79 : x
  2. Step 2: Convert to fraction form
    83,969.55/115,888.57 = 48,158.79/x
  3. Step 3: Cross multiply
    83,969.55x = 115,888.57 × 48,158.79
  4. Step 4: Simplify right side
    83,969.55x = 5,581,053,673.82
  5. Step 5: Solve for x
    x = 5,581,053,673.82/83,969.55
  6. Step 6: Final answer
    x = 66,465.21

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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.