Home / 76,534.38-105,618.70-42,080.57

Finding the Fourth Proportional to 76,534.38, 105,618.70 and 42,080.57

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Solution

The fourth proportional to 76,534.38, 105,618.70 and 42,080.57 is: 58,071.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,534.38 : 105,618.70 = 42,080.57 : x
  2. Step 2: Convert to fraction form
    76,534.38/105,618.70 = 42,080.57/x
  3. Step 3: Cross multiply
    76,534.38x = 105,618.70 × 42,080.57
  4. Step 4: Simplify right side
    76,534.38x = 4,444,494,570.57
  5. Step 5: Solve for x
    x = 4,444,494,570.57/76,534.38
  6. Step 6: Final answer
    x = 58,071.87

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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.