Home / 87,987.44-121,368.30-54,001.46

Finding the Fourth Proportional to 87,987.44, 121,368.30 and 54,001.46

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Solution

The fourth proportional to 87,987.44, 121,368.30 and 54,001.46 is: 74,488.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,987.44 : 121,368.30 = 54,001.46 : x
  2. Step 2: Convert to fraction form
    87,987.44/121,368.30 = 54,001.46/x
  3. Step 3: Cross multiply
    87,987.44x = 121,368.30 × 54,001.46
  4. Step 4: Simplify right side
    87,987.44x = 6,554,065,397.72
  5. Step 5: Solve for x
    x = 6,554,065,397.72/87,987.44
  6. Step 6: Final answer
    x = 74,488.65

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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.