Home / 78,866.13-108,836.91-43,057.65

Finding the Fourth Proportional to 78,866.13, 108,836.91 and 43,057.65

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Solution

The fourth proportional to 78,866.13, 108,836.91 and 43,057.65 is: 59,420.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,866.13 : 108,836.91 = 43,057.65 : x
  2. Step 2: Convert to fraction form
    78,866.13/108,836.91 = 43,057.65/x
  3. Step 3: Cross multiply
    78,866.13x = 108,836.91 × 43,057.65
  4. Step 4: Simplify right side
    78,866.13x = 4,686,261,577.86
  5. Step 5: Solve for x
    x = 4,686,261,577.86/78,866.13
  6. Step 6: Final answer
    x = 59,420.46

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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.