Home / 78,340.14-117,485.28-25,737.48

Finding the Fourth Proportional to 78,340.14, 117,485.28 and 25,737.48

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Solution

The fourth proportional to 78,340.14, 117,485.28 and 25,737.48 is: 38,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,340.14 : 117,485.28 = 25,737.48 : x
  2. Step 2: Convert to fraction form
    78,340.14/117,485.28 = 25,737.48/x
  3. Step 3: Cross multiply
    78,340.14x = 117,485.28 × 25,737.48
  4. Step 4: Simplify right side
    78,340.14x = 3,023,775,044.29
  5. Step 5: Solve for x
    x = 3,023,775,044.29/78,340.14
  6. Step 6: Final answer
    x = 38,598.03

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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.