Home / 83,420.61-115,122.78-50,714.97

Finding the Fourth Proportional to 83,420.61, 115,122.78 and 50,714.97

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Solution

The fourth proportional to 83,420.61, 115,122.78 and 50,714.97 is: 69,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,420.61 : 115,122.78 = 50,714.97 : x
  2. Step 2: Convert to fraction form
    83,420.61/115,122.78 = 50,714.97/x
  3. Step 3: Cross multiply
    83,420.61x = 115,122.78 × 50,714.97
  4. Step 4: Simplify right side
    83,420.61x = 5,838,448,334.02
  5. Step 5: Solve for x
    x = 5,838,448,334.02/83,420.61
  6. Step 6: Final answer
    x = 69,988.08

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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.