Home / 86,728.16-129,998.92-56,731.08

Finding the Fourth Proportional to 86,728.16, 129,998.92 and 56,731.08

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Solution

The fourth proportional to 86,728.16, 129,998.92 and 56,731.08 is: 85,035.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,728.16 : 129,998.92 = 56,731.08 : x
  2. Step 2: Convert to fraction form
    86,728.16/129,998.92 = 56,731.08/x
  3. Step 3: Cross multiply
    86,728.16x = 129,998.92 × 56,731.08
  4. Step 4: Simplify right side
    86,728.16x = 7,374,979,130.43
  5. Step 5: Solve for x
    x = 7,374,979,130.43/86,728.16
  6. Step 6: Final answer
    x = 85,035.58

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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.