Home / 91,315.35-136,983.96-38,718

Finding the Fourth Proportional to 91,315.35, 136,983.96 and 38,718

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Solution

The fourth proportional to 91,315.35, 136,983.96 and 38,718 is: 58,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,315.35 : 136,983.96 = 38,718 : x
  2. Step 2: Convert to fraction form
    91,315.35/136,983.96 = 38,718/x
  3. Step 3: Cross multiply
    91,315.35x = 136,983.96 × 38,718
  4. Step 4: Simplify right side
    91,315.35x = 5,303,744,963.28
  5. Step 5: Solve for x
    x = 5,303,744,963.28/91,315.35
  6. Step 6: Final answer
    x = 58,081.64

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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.