Home / 83,707.25-115,518.04-47,908.79

Finding the Fourth Proportional to 83,707.25, 115,518.04 and 47,908.79

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Solution

The fourth proportional to 83,707.25, 115,518.04 and 47,908.79 is: 66,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,707.25 : 115,518.04 = 47,908.79 : x
  2. Step 2: Convert to fraction form
    83,707.25/115,518.04 = 47,908.79/x
  3. Step 3: Cross multiply
    83,707.25x = 115,518.04 × 47,908.79
  4. Step 4: Simplify right side
    83,707.25x = 5,534,329,255.40
  5. Step 5: Solve for x
    x = 5,534,329,255.40/83,707.25
  6. Step 6: Final answer
    x = 66,115.30

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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.