Home / 77,116.68-106,415.33-42,659.91

Finding the Fourth Proportional to 77,116.68, 106,415.33 and 42,659.91

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Solution

The fourth proportional to 77,116.68, 106,415.33 and 42,659.91 is: 58,867.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,116.68 : 106,415.33 = 42,659.91 : x
  2. Step 2: Convert to fraction form
    77,116.68/106,415.33 = 42,659.91/x
  3. Step 3: Cross multiply
    77,116.68x = 106,415.33 × 42,659.91
  4. Step 4: Simplify right side
    77,116.68x = 4,539,668,187.12
  5. Step 5: Solve for x
    x = 4,539,668,187.12/77,116.68
  6. Step 6: Final answer
    x = 58,867.53

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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.