Home / 81,987.09-122,994.66-37,617.66

Finding the Fourth Proportional to 81,987.09, 122,994.66 and 37,617.66

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Solution

The fourth proportional to 81,987.09, 122,994.66 and 37,617.66 is: 56,432.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,987.09 : 122,994.66 = 37,617.66 : x
  2. Step 2: Convert to fraction form
    81,987.09/122,994.66 = 37,617.66/x
  3. Step 3: Cross multiply
    81,987.09x = 122,994.66 × 37,617.66
  4. Step 4: Simplify right side
    81,987.09x = 4,626,771,301.70
  5. Step 5: Solve for x
    x = 4,626,771,301.70/81,987.09
  6. Step 6: Final answer
    x = 56,432.93

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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.