Home / 90,891.45-125,445.51-58,617

Finding the Fourth Proportional to 90,891.45, 125,445.51 and 58,617

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Solution

The fourth proportional to 90,891.45, 125,445.51 and 58,617 is: 80,901.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,891.45 : 125,445.51 = 58,617 : x
  2. Step 2: Convert to fraction form
    90,891.45/125,445.51 = 58,617/x
  3. Step 3: Cross multiply
    90,891.45x = 125,445.51 × 58,617
  4. Step 4: Simplify right side
    90,891.45x = 7,353,239,459.67
  5. Step 5: Solve for x
    x = 7,353,239,459.67/90,891.45
  6. Step 6: Final answer
    x = 80,901.33

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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.