Home / 83,639.18-115,369.56-49,623.59

Finding the Fourth Proportional to 83,639.18, 115,369.56 and 49,623.59

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Solution

The fourth proportional to 83,639.18, 115,369.56 and 49,623.59 is: 68,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,639.18 : 115,369.56 = 49,623.59 : x
  2. Step 2: Convert to fraction form
    83,639.18/115,369.56 = 49,623.59/x
  3. Step 3: Cross multiply
    83,639.18x = 115,369.56 × 49,623.59
  4. Step 4: Simplify right side
    83,639.18x = 5,725,051,167.07
  5. Step 5: Solve for x
    x = 5,725,051,167.07/83,639.18
  6. Step 6: Final answer
    x = 68,449.40

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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.