Home / 90,437.28-124,659.63-71,286

Finding the Fourth Proportional to 90,437.28, 124,659.63 and 71,286

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Solution

The fourth proportional to 90,437.28, 124,659.63 and 71,286 is: 98,261.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,437.28 : 124,659.63 = 71,286 : x
  2. Step 2: Convert to fraction form
    90,437.28/124,659.63 = 71,286/x
  3. Step 3: Cross multiply
    90,437.28x = 124,659.63 × 71,286
  4. Step 4: Simplify right side
    90,437.28x = 8,886,486,384.18
  5. Step 5: Solve for x
    x = 8,886,486,384.18/90,437.28
  6. Step 6: Final answer
    x = 98,261.32

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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.