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Finding the Fourth Proportional to 83,686.70, 115,488.54 and 45,960.95

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Solution

The fourth proportional to 83,686.70, 115,488.54 and 45,960.95 is: 63,426.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,686.70 : 115,488.54 = 45,960.95 : x
  2. Step 2: Convert to fraction form
    83,686.70/115,488.54 = 45,960.95/x
  3. Step 3: Cross multiply
    83,686.70x = 115,488.54 × 45,960.95
  4. Step 4: Simplify right side
    83,686.70x = 5,307,962,435.07
  5. Step 5: Solve for x
    x = 5,307,962,435.07/83,686.70
  6. Step 6: Final answer
    x = 63,426.60

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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.