Home / 105,321.75-145,347.18-57,577.65

Finding the Fourth Proportional to 105,321.75, 145,347.18 and 57,577.65

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Solution

The fourth proportional to 105,321.75, 145,347.18 and 57,577.65 is: 79,458.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,321.75 : 145,347.18 = 57,577.65 : x
  2. Step 2: Convert to fraction form
    105,321.75/145,347.18 = 57,577.65/x
  3. Step 3: Cross multiply
    105,321.75x = 145,347.18 × 57,577.65
  4. Step 4: Simplify right side
    105,321.75x = 8,368,748,043.90
  5. Step 5: Solve for x
    x = 8,368,748,043.90/105,321.75
  6. Step 6: Final answer
    x = 79,458.88

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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.