Home / 105,521.25-158,281.88-31,649.25

Finding the Fourth Proportional to 105,521.25, 158,281.88 and 31,649.25

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Solution

The fourth proportional to 105,521.25, 158,281.88 and 31,649.25 is: 47,473.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,521.25 : 158,281.88 = 31,649.25 : x
  2. Step 2: Convert to fraction form
    105,521.25/158,281.88 = 31,649.25/x
  3. Step 3: Cross multiply
    105,521.25x = 158,281.88 × 31,649.25
  4. Step 4: Simplify right side
    105,521.25x = 5,009,502,790.59
  5. Step 5: Solve for x
    x = 5,009,502,790.59/105,521.25
  6. Step 6: Final answer
    x = 47,473.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.