Home / 81,555.12-112,472.40-52,845.60

Finding the Fourth Proportional to 81,555.12, 112,472.40 and 52,845.60

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Solution

The fourth proportional to 81,555.12, 112,472.40 and 52,845.60 is: 72,879.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,555.12 : 112,472.40 = 52,845.60 : x
  2. Step 2: Convert to fraction form
    81,555.12/112,472.40 = 52,845.60/x
  3. Step 3: Cross multiply
    81,555.12x = 112,472.40 × 52,845.60
  4. Step 4: Simplify right side
    81,555.12x = 5,943,671,461.44
  5. Step 5: Solve for x
    x = 5,943,671,461.44/81,555.12
  6. Step 6: Final answer
    x = 72,879.19

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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.