Home / 86,734.28-130,012.80-49,215.10

Finding the Fourth Proportional to 86,734.28, 130,012.80 and 49,215.10

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Solution

The fourth proportional to 86,734.28, 130,012.80 and 49,215.10 is: 73,772.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,734.28 : 130,012.80 = 49,215.10 : x
  2. Step 2: Convert to fraction form
    86,734.28/130,012.80 = 49,215.10/x
  3. Step 3: Cross multiply
    86,734.28x = 130,012.80 × 49,215.10
  4. Step 4: Simplify right side
    86,734.28x = 6,398,592,953.28
  5. Step 5: Solve for x
    x = 6,398,592,953.28/86,734.28
  6. Step 6: Final answer
    x = 73,772.36

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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.