Home / 87,987.52-121,427.52-50,269.12

Finding the Fourth Proportional to 87,987.52, 121,427.52 and 50,269.12

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Solution

The fourth proportional to 87,987.52, 121,427.52 and 50,269.12 is: 69,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,987.52 : 121,427.52 = 50,269.12 : x
  2. Step 2: Convert to fraction form
    87,987.52/121,427.52 = 50,269.12/x
  3. Step 3: Cross multiply
    87,987.52x = 121,427.52 × 50,269.12
  4. Step 4: Simplify right side
    87,987.52x = 6,104,054,574.18
  5. Step 5: Solve for x
    x = 6,104,054,574.18/87,987.52
  6. Step 6: Final answer
    x = 69,374.10

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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.