Home / 81,148.97-111,986.15-45,340.49

Finding the Fourth Proportional to 81,148.97, 111,986.15 and 45,340.49

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Solution

The fourth proportional to 81,148.97, 111,986.15 and 45,340.49 is: 62,570.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,148.97 : 111,986.15 = 45,340.49 : x
  2. Step 2: Convert to fraction form
    81,148.97/111,986.15 = 45,340.49/x
  3. Step 3: Cross multiply
    81,148.97x = 111,986.15 × 45,340.49
  4. Step 4: Simplify right side
    81,148.97x = 5,077,506,967.48
  5. Step 5: Solve for x
    x = 5,077,506,967.48/81,148.97
  6. Step 6: Final answer
    x = 62,570.19

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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.