Home / 105,427.52-145,489.88-57,680.90

Finding the Fourth Proportional to 105,427.52, 145,489.88 and 57,680.90

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Solution

The fourth proportional to 105,427.52, 145,489.88 and 57,680.90 is: 79,599.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,427.52 : 145,489.88 = 57,680.90 : x
  2. Step 2: Convert to fraction form
    105,427.52/145,489.88 = 57,680.90/x
  3. Step 3: Cross multiply
    105,427.52x = 145,489.88 × 57,680.90
  4. Step 4: Simplify right side
    105,427.52x = 8,391,987,219.29
  5. Step 5: Solve for x
    x = 8,391,987,219.29/105,427.52
  6. Step 6: Final answer
    x = 79,599.59

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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.