Home / 87,989.52-121,430.28-50,271.12

Finding the Fourth Proportional to 87,989.52, 121,430.28 and 50,271.12

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Solution

The fourth proportional to 87,989.52, 121,430.28 and 50,271.12 is: 69,376.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,989.52 : 121,430.28 = 50,271.12 : x
  2. Step 2: Convert to fraction form
    87,989.52/121,430.28 = 50,271.12/x
  3. Step 3: Cross multiply
    87,989.52x = 121,430.28 × 50,271.12
  4. Step 4: Simplify right side
    87,989.52x = 6,104,436,177.51
  5. Step 5: Solve for x
    x = 6,104,436,177.51/87,989.52
  6. Step 6: Final answer
    x = 69,376.86

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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.