Home / 83,821.50-115,666.65-49,360.75

Finding the Fourth Proportional to 83,821.50, 115,666.65 and 49,360.75

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Solution

The fourth proportional to 83,821.50, 115,666.65 and 49,360.75 is: 68,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,821.50 : 115,666.65 = 49,360.75 : x
  2. Step 2: Convert to fraction form
    83,821.50/115,666.65 = 49,360.75/x
  3. Step 3: Cross multiply
    83,821.50x = 115,666.65 × 49,360.75
  4. Step 4: Simplify right side
    83,821.50x = 5,709,392,304.82
  5. Step 5: Solve for x
    x = 5,709,392,304.82/83,821.50
  6. Step 6: Final answer
    x = 68,113.70

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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.