Home / 105,315.24-145,335.30-62,872.80

Finding the Fourth Proportional to 105,315.24, 145,335.30 and 62,872.80

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Solution

The fourth proportional to 105,315.24, 145,335.30 and 62,872.80 is: 86,764.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,315.24 : 145,335.30 = 62,872.80 : x
  2. Step 2: Convert to fraction form
    105,315.24/145,335.30 = 62,872.80/x
  3. Step 3: Cross multiply
    105,315.24x = 145,335.30 × 62,872.80
  4. Step 4: Simplify right side
    105,315.24x = 9,137,637,249.84
  5. Step 5: Solve for x
    x = 9,137,637,249.84/105,315.24
  6. Step 6: Final answer
    x = 86,764.62

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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.