Home / 90,859.59-136,312.07-31,695.75

Finding the Fourth Proportional to 90,859.59, 136,312.07 and 31,695.75

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Solution

The fourth proportional to 90,859.59, 136,312.07 and 31,695.75 is: 47,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,859.59 : 136,312.07 = 31,695.75 : x
  2. Step 2: Convert to fraction form
    90,859.59/136,312.07 = 31,695.75/x
  3. Step 3: Cross multiply
    90,859.59x = 136,312.07 × 31,695.75
  4. Step 4: Simplify right side
    90,859.59x = 4,320,513,134.22
  5. Step 5: Solve for x
    x = 4,320,513,134.22/90,859.59
  6. Step 6: Final answer
    x = 47,551.54

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1.5x scale

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.