Home / 77,191.23-115,726.35-30,479.07

Finding the Fourth Proportional to 77,191.23, 115,726.35 and 30,479.07

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Solution

The fourth proportional to 77,191.23, 115,726.35 and 30,479.07 is: 45,694.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,191.23 : 115,726.35 = 30,479.07 : x
  2. Step 2: Convert to fraction form
    77,191.23/115,726.35 = 30,479.07/x
  3. Step 3: Cross multiply
    77,191.23x = 115,726.35 × 30,479.07
  4. Step 4: Simplify right side
    77,191.23x = 3,527,231,522.49
  5. Step 5: Solve for x
    x = 3,527,231,522.49/77,191.23
  6. Step 6: Final answer
    x = 45,694.72

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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.