Home / 78,825.08-108,780.91-43,017.39

Finding the Fourth Proportional to 78,825.08, 108,780.91 and 43,017.39

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Solution

The fourth proportional to 78,825.08, 108,780.91 and 43,017.39 is: 59,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825.08 : 108,780.91 = 43,017.39 : x
  2. Step 2: Convert to fraction form
    78,825.08/108,780.91 = 43,017.39/x
  3. Step 3: Cross multiply
    78,825.08x = 108,780.91 × 43,017.39
  4. Step 4: Simplify right side
    78,825.08x = 4,679,470,722.48
  5. Step 5: Solve for x
    x = 4,679,470,722.48/78,825.08
  6. Step 6: Final answer
    x = 59,365.25

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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.