Home / 77,990.45-107,626.82-42,180.46

Finding the Fourth Proportional to 77,990.45, 107,626.82 and 42,180.46

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Solution

The fourth proportional to 77,990.45, 107,626.82 and 42,180.46 is: 58,209.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,990.45 : 107,626.82 = 42,180.46 : x
  2. Step 2: Convert to fraction form
    77,990.45/107,626.82 = 42,180.46/x
  3. Step 3: Cross multiply
    77,990.45x = 107,626.82 × 42,180.46
  4. Step 4: Simplify right side
    77,990.45x = 4,539,748,775.94
  5. Step 5: Solve for x
    x = 4,539,748,775.94/77,990.45
  6. Step 6: Final answer
    x = 58,209.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.