Home / 78,816.40-108,765.12-43,005.52

Finding the Fourth Proportional to 78,816.40, 108,765.12 and 43,005.52

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Solution

The fourth proportional to 78,816.40, 108,765.12 and 43,005.52 is: 59,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,816.40 : 108,765.12 = 43,005.52 : x
  2. Step 2: Convert to fraction form
    78,816.40/108,765.12 = 43,005.52/x
  3. Step 3: Cross multiply
    78,816.40x = 108,765.12 × 43,005.52
  4. Step 4: Simplify right side
    78,816.40x = 4,677,500,543.46
  5. Step 5: Solve for x
    x = 4,677,500,543.46/78,816.40
  6. Step 6: Final answer
    x = 59,346.79

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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.