Home / 78,946.40-118,427.57-25,636.15

Finding the Fourth Proportional to 78,946.40, 118,427.57 and 25,636.15

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Solution

The fourth proportional to 78,946.40, 118,427.57 and 25,636.15 is: 38,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,946.40 : 118,427.57 = 25,636.15 : x
  2. Step 2: Convert to fraction form
    78,946.40/118,427.57 = 25,636.15/x
  3. Step 3: Cross multiply
    78,946.40x = 118,427.57 × 25,636.15
  4. Step 4: Simplify right side
    78,946.40x = 3,036,026,948.66
  5. Step 5: Solve for x
    x = 3,036,026,948.66/78,946.40
  6. Step 6: Final answer
    x = 38,456.81

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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.