Home / 86,401.12-129,582.24-56,405.92

Finding the Fourth Proportional to 86,401.12, 129,582.24 and 56,405.92

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Solution

The fourth proportional to 86,401.12, 129,582.24 and 56,405.92 is: 84,596.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,401.12 : 129,582.24 = 56,405.92 : x
  2. Step 2: Convert to fraction form
    86,401.12/129,582.24 = 56,405.92/x
  3. Step 3: Cross multiply
    86,401.12x = 129,582.24 × 56,405.92
  4. Step 4: Simplify right side
    86,401.12x = 7,309,205,462.86
  5. Step 5: Solve for x
    x = 7,309,205,462.86/86,401.12
  6. Step 6: Final answer
    x = 84,596.19

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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.