Home / 86,816.30-130,030.05-71,264.30

Finding the Fourth Proportional to 86,816.30, 130,030.05 and 71,264.30

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Solution

The fourth proportional to 86,816.30, 130,030.05 and 71,264.30 is: 106,736.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,816.30 : 130,030.05 = 71,264.30 : x
  2. Step 2: Convert to fraction form
    86,816.30/130,030.05 = 71,264.30/x
  3. Step 3: Cross multiply
    86,816.30x = 130,030.05 × 71,264.30
  4. Step 4: Simplify right side
    86,816.30x = 9,266,500,492.22
  5. Step 5: Solve for x
    x = 9,266,500,492.22/86,816.30
  6. Step 6: Final answer
    x = 106,736.87

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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.