Home / 80,045.96-120,141.30-42,637.28

Finding the Fourth Proportional to 80,045.96, 120,141.30 and 42,637.28

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Solution

The fourth proportional to 80,045.96, 120,141.30 and 42,637.28 is: 63,994.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,045.96 : 120,141.30 = 42,637.28 : x
  2. Step 2: Convert to fraction form
    80,045.96/120,141.30 = 42,637.28/x
  3. Step 3: Cross multiply
    80,045.96x = 120,141.30 × 42,637.28
  4. Step 4: Simplify right side
    80,045.96x = 5,122,498,247.66
  5. Step 5: Solve for x
    x = 5,122,498,247.66/80,045.96
  6. Step 6: Final answer
    x = 63,994.46

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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.