Home / 86,822.10-130,233.15-31,410.90

Finding the Fourth Proportional to 86,822.10, 130,233.15 and 31,410.90

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Solution

The fourth proportional to 86,822.10, 130,233.15 and 31,410.90 is: 47,116.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,822.10 : 130,233.15 = 31,410.90 : x
  2. Step 2: Convert to fraction form
    86,822.10/130,233.15 = 31,410.90/x
  3. Step 3: Cross multiply
    86,822.10x = 130,233.15 × 31,410.90
  4. Step 4: Simplify right side
    86,822.10x = 4,090,740,451.34
  5. Step 5: Solve for x
    x = 4,090,740,451.34/86,822.10
  6. Step 6: Final answer
    x = 47,116.35

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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.