Home / 83,391.04-115,078.48-45,665.28

Finding the Fourth Proportional to 83,391.04, 115,078.48 and 45,665.28

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Solution

The fourth proportional to 83,391.04, 115,078.48 and 45,665.28 is: 63,017.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,391.04 : 115,078.48 = 45,665.28 : x
  2. Step 2: Convert to fraction form
    83,391.04/115,078.48 = 45,665.28/x
  3. Step 3: Cross multiply
    83,391.04x = 115,078.48 × 45,665.28
  4. Step 4: Simplify right side
    83,391.04x = 5,255,091,011.17
  5. Step 5: Solve for x
    x = 5,255,091,011.17/83,391.04
  6. Step 6: Final answer
    x = 63,017.45

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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.