Home / 78,270.32-108,013.24-42,460.33

Finding the Fourth Proportional to 78,270.32, 108,013.24 and 42,460.33

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Solution

The fourth proportional to 78,270.32, 108,013.24 and 42,460.33 is: 58,595.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,270.32 : 108,013.24 = 42,460.33 : x
  2. Step 2: Convert to fraction form
    78,270.32/108,013.24 = 42,460.33/x
  3. Step 3: Cross multiply
    78,270.32x = 108,013.24 × 42,460.33
  4. Step 4: Simplify right side
    78,270.32x = 4,586,277,274.70
  5. Step 5: Solve for x
    x = 4,586,277,274.70/78,270.32
  6. Step 6: Final answer
    x = 58,595.36

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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.