Home / 83,643.08-115,430.42-45,920.20

Finding the Fourth Proportional to 83,643.08, 115,430.42 and 45,920.20

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Solution

The fourth proportional to 83,643.08, 115,430.42 and 45,920.20 is: 63,371.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,643.08 : 115,430.42 = 45,920.20 : x
  2. Step 2: Convert to fraction form
    83,643.08/115,430.42 = 45,920.20/x
  3. Step 3: Cross multiply
    83,643.08x = 115,430.42 × 45,920.20
  4. Step 4: Simplify right side
    83,643.08x = 5,300,587,972.48
  5. Step 5: Solve for x
    x = 5,300,587,972.48/83,643.08
  6. Step 6: Final answer
    x = 63,371.51

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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.