Home / 83,681.10-125,521.65-31,079.70

Finding the Fourth Proportional to 83,681.10, 125,521.65 and 31,079.70

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Solution

The fourth proportional to 83,681.10, 125,521.65 and 31,079.70 is: 46,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,681.10 : 125,521.65 = 31,079.70 : x
  2. Step 2: Convert to fraction form
    83,681.10/125,521.65 = 31,079.70/x
  3. Step 3: Cross multiply
    83,681.10x = 125,521.65 × 31,079.70
  4. Step 4: Simplify right side
    83,681.10x = 3,901,175,225.51
  5. Step 5: Solve for x
    x = 3,901,175,225.51/83,681.10
  6. Step 6: Final answer
    x = 46,619.55

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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.