Home / 78,478.23-108,304.39-42,667.48

Finding the Fourth Proportional to 78,478.23, 108,304.39 and 42,667.48

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Solution

The fourth proportional to 78,478.23, 108,304.39 and 42,667.48 is: 58,883.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,478.23 : 108,304.39 = 42,667.48 : x
  2. Step 2: Convert to fraction form
    78,478.23/108,304.39 = 42,667.48/x
  3. Step 3: Cross multiply
    78,478.23x = 108,304.39 × 42,667.48
  4. Step 4: Simplify right side
    78,478.23x = 4,621,074,973.74
  5. Step 5: Solve for x
    x = 4,621,074,973.74/78,478.23
  6. Step 6: Final answer
    x = 58,883.52

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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.