Home / 77,890.55-107,489.00-42,080.54

Finding the Fourth Proportional to 77,890.55, 107,489.00 and 42,080.54

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Solution

The fourth proportional to 77,890.55, 107,489.00 and 42,080.54 is: 58,071.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,890.55 : 107,489.00 = 42,080.54 : x
  2. Step 2: Convert to fraction form
    77,890.55/107,489.00 = 42,080.54/x
  3. Step 3: Cross multiply
    77,890.55x = 107,489.00 × 42,080.54
  4. Step 4: Simplify right side
    77,890.55x = 4,523,194,731.82
  5. Step 5: Solve for x
    x = 4,523,194,731.82/77,890.55
  6. Step 6: Final answer
    x = 58,071.17

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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.