Home / 90,825.63-125,319.72-55,017.15

Finding the Fourth Proportional to 90,825.63, 125,319.72 and 55,017.15

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Solution

The fourth proportional to 90,825.63, 125,319.72 and 55,017.15 is: 75,911.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,825.63 : 125,319.72 = 55,017.15 : x
  2. Step 2: Convert to fraction form
    90,825.63/125,319.72 = 55,017.15/x
  3. Step 3: Cross multiply
    90,825.63x = 125,319.72 × 55,017.15
  4. Step 4: Simplify right side
    90,825.63x = 6,894,733,833.20
  5. Step 5: Solve for x
    x = 6,894,733,833.20/90,825.63
  6. Step 6: Final answer
    x = 75,911.76

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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.