Home / 84,386.22-126,579.60-31,781.58

Finding the Fourth Proportional to 84,386.22, 126,579.60 and 31,781.58

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Solution

The fourth proportional to 84,386.22, 126,579.60 and 31,781.58 is: 47,672.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,386.22 : 126,579.60 = 31,781.58 : x
  2. Step 2: Convert to fraction form
    84,386.22/126,579.60 = 31,781.58/x
  3. Step 3: Cross multiply
    84,386.22x = 126,579.60 × 31,781.58
  4. Step 4: Simplify right side
    84,386.22x = 4,022,899,683.77
  5. Step 5: Solve for x
    x = 4,022,899,683.77/84,386.22
  6. Step 6: Final answer
    x = 47,672.47

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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.