Home / 77,008.12-115,319.40-48,842.80

Finding the Fourth Proportional to 77,008.12, 115,319.40 and 48,842.80

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Solution

The fourth proportional to 77,008.12, 115,319.40 and 48,842.80 is: 73,141.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,008.12 : 115,319.40 = 48,842.80 : x
  2. Step 2: Convert to fraction form
    77,008.12/115,319.40 = 48,842.80/x
  3. Step 3: Cross multiply
    77,008.12x = 115,319.40 × 48,842.80
  4. Step 4: Simplify right side
    77,008.12x = 5,632,522,390.32
  5. Step 5: Solve for x
    x = 5,632,522,390.32/77,008.12
  6. Step 6: Final answer
    x = 73,141.93

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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.