Home / 83,655.12-115,411.14-47,825.88

Finding the Fourth Proportional to 83,655.12, 115,411.14 and 47,825.88

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Solution

The fourth proportional to 83,655.12, 115,411.14 and 47,825.88 is: 65,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,655.12 : 115,411.14 = 47,825.88 : x
  2. Step 2: Convert to fraction form
    83,655.12/115,411.14 = 47,825.88/x
  3. Step 3: Cross multiply
    83,655.12x = 115,411.14 × 47,825.88
  4. Step 4: Simplify right side
    83,655.12x = 5,519,639,332.30
  5. Step 5: Solve for x
    x = 5,519,639,332.30/83,655.12
  6. Step 6: Final answer
    x = 65,980.89

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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.