Home / 90,839.68-136,210.08-31,659.48

Finding the Fourth Proportional to 90,839.68, 136,210.08 and 31,659.48

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Solution

The fourth proportional to 90,839.68, 136,210.08 and 31,659.48 is: 47,471.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,839.68 : 136,210.08 = 31,659.48 : x
  2. Step 2: Convert to fraction form
    90,839.68/136,210.08 = 31,659.48/x
  3. Step 3: Cross multiply
    90,839.68x = 136,210.08 × 31,659.48
  4. Step 4: Simplify right side
    90,839.68x = 4,312,340,303.56
  5. Step 5: Solve for x
    x = 4,312,340,303.56/90,839.68
  6. Step 6: Final answer
    x = 47,471.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.