Home / 78,392.56-117,587.14-19,228.52

Finding the Fourth Proportional to 78,392.56, 117,587.14 and 19,228.52

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Solution

The fourth proportional to 78,392.56, 117,587.14 and 19,228.52 is: 28,842.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392.56 : 117,587.14 = 19,228.52 : x
  2. Step 2: Convert to fraction form
    78,392.56/117,587.14 = 19,228.52/x
  3. Step 3: Cross multiply
    78,392.56x = 117,587.14 × 19,228.52
  4. Step 4: Simplify right side
    78,392.56x = 2,261,026,673.23
  5. Step 5: Solve for x
    x = 2,261,026,673.23/78,392.56
  6. Step 6: Final answer
    x = 28,842.36

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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.