Home / 78,637.74-108,522.15-42,829.26

Finding the Fourth Proportional to 78,637.74, 108,522.15 and 42,829.26

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Solution

The fourth proportional to 78,637.74, 108,522.15 and 42,829.26 is: 59,105.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,637.74 : 108,522.15 = 42,829.26 : x
  2. Step 2: Convert to fraction form
    78,637.74/108,522.15 = 42,829.26/x
  3. Step 3: Cross multiply
    78,637.74x = 108,522.15 × 42,829.26
  4. Step 4: Simplify right side
    78,637.74x = 4,647,923,378.11
  5. Step 5: Solve for x
    x = 4,647,923,378.11/78,637.74
  6. Step 6: Final answer
    x = 59,105.51

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1.5x scale

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.