Home / 78,447.03-108,257.56-42,637.03

Finding the Fourth Proportional to 78,447.03, 108,257.56 and 42,637.03

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Solution

The fourth proportional to 78,447.03, 108,257.56 and 42,637.03 is: 58,839.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,447.03 : 108,257.56 = 42,637.03 : x
  2. Step 2: Convert to fraction form
    78,447.03/108,257.56 = 42,637.03/x
  3. Step 3: Cross multiply
    78,447.03x = 108,257.56 × 42,637.03
  4. Step 4: Simplify right side
    78,447.03x = 4,615,781,304.99
  5. Step 5: Solve for x
    x = 4,615,781,304.99/78,447.03
  6. Step 6: Final answer
    x = 58,839.46

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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.