Home / 83,823.28-115,703.28-53,689.72

Finding the Fourth Proportional to 83,823.28, 115,703.28 and 53,689.72

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Solution

The fourth proportional to 83,823.28, 115,703.28 and 53,689.72 is: 74,109.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,823.28 : 115,703.28 = 53,689.72 : x
  2. Step 2: Convert to fraction form
    83,823.28/115,703.28 = 53,689.72/x
  3. Step 3: Cross multiply
    83,823.28x = 115,703.28 × 53,689.72
  4. Step 4: Simplify right side
    83,823.28x = 6,212,076,706.28
  5. Step 5: Solve for x
    x = 6,212,076,706.28/83,823.28
  6. Step 6: Final answer
    x = 74,109.21

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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.