Home / 90,901.31-125,443.49-50,615.55

Finding the Fourth Proportional to 90,901.31, 125,443.49 and 50,615.55

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Solution

The fourth proportional to 90,901.31, 125,443.49 and 50,615.55 is: 69,849.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,901.31 : 125,443.49 = 50,615.55 : x
  2. Step 2: Convert to fraction form
    90,901.31/125,443.49 = 50,615.55/x
  3. Step 3: Cross multiply
    90,901.31x = 125,443.49 × 50,615.55
  4. Step 4: Simplify right side
    90,901.31x = 6,349,390,987.19
  5. Step 5: Solve for x
    x = 6,349,390,987.19/90,901.31
  6. Step 6: Final answer
    x = 69,849.28

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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.