Home / 86,695.78-130,081.23-30,575.99

Finding the Fourth Proportional to 86,695.78, 130,081.23 and 30,575.99

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Solution

The fourth proportional to 86,695.78, 130,081.23 and 30,575.99 is: 45,877.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,695.78 : 130,081.23 = 30,575.99 : x
  2. Step 2: Convert to fraction form
    86,695.78/130,081.23 = 30,575.99/x
  3. Step 3: Cross multiply
    86,695.78x = 130,081.23 × 30,575.99
  4. Step 4: Simplify right side
    86,695.78x = 3,977,362,387.67
  5. Step 5: Solve for x
    x = 3,977,362,387.67/86,695.78
  6. Step 6: Final answer
    x = 45,877.23

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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.