Home / 90,690.09-136,035.45-31,526.25

Finding the Fourth Proportional to 90,690.09, 136,035.45 and 31,526.25

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Solution

The fourth proportional to 90,690.09, 136,035.45 and 31,526.25 is: 47,289.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690.09 : 136,035.45 = 31,526.25 : x
  2. Step 2: Convert to fraction form
    90,690.09/136,035.45 = 31,526.25/x
  3. Step 3: Cross multiply
    90,690.09x = 136,035.45 × 31,526.25
  4. Step 4: Simplify right side
    90,690.09x = 4,288,687,605.56
  5. Step 5: Solve for x
    x = 4,288,687,605.56/90,690.09
  6. Step 6: Final answer
    x = 47,289.48

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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.