Home / 105,488.31-145,574.03-57,744.68

Finding the Fourth Proportional to 105,488.31, 145,574.03 and 57,744.68

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Solution

The fourth proportional to 105,488.31, 145,574.03 and 57,744.68 is: 79,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,488.31 : 145,574.03 = 57,744.68 : x
  2. Step 2: Convert to fraction form
    105,488.31/145,574.03 = 57,744.68/x
  3. Step 3: Cross multiply
    105,488.31x = 145,574.03 × 57,744.68
  4. Step 4: Simplify right side
    105,488.31x = 8,406,125,778.66
  5. Step 5: Solve for x
    x = 8,406,125,778.66/105,488.31
  6. Step 6: Final answer
    x = 79,687.75

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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.