Home / 80,637.46-120,976.64-56,991.53

Finding the Fourth Proportional to 80,637.46, 120,976.64 and 56,991.53

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Solution

The fourth proportional to 80,637.46, 120,976.64 and 56,991.53 is: 85,501.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,637.46 : 120,976.64 = 56,991.53 : x
  2. Step 2: Convert to fraction form
    80,637.46/120,976.64 = 56,991.53/x
  3. Step 3: Cross multiply
    80,637.46x = 120,976.64 × 56,991.53
  4. Step 4: Simplify right side
    80,637.46x = 6,894,643,807.86
  5. Step 5: Solve for x
    x = 6,894,643,807.86/80,637.46
  6. Step 6: Final answer
    x = 85,501.75

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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.