Home / 78,248.73-117,374.31-19,085.52

Finding the Fourth Proportional to 78,248.73, 117,374.31 and 19,085.52

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Solution

The fourth proportional to 78,248.73, 117,374.31 and 19,085.52 is: 28,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,248.73 : 117,374.31 = 19,085.52 : x
  2. Step 2: Convert to fraction form
    78,248.73/117,374.31 = 19,085.52/x
  3. Step 3: Cross multiply
    78,248.73x = 117,374.31 × 19,085.52
  4. Step 4: Simplify right side
    78,248.73x = 2,240,149,740.99
  5. Step 5: Solve for x
    x = 2,240,149,740.99/78,248.73
  6. Step 6: Final answer
    x = 28,628.58

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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.