Home / 78,490.24-108,261.92-51,624.32

Finding the Fourth Proportional to 78,490.24, 108,261.92 and 51,624.32

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Solution

The fourth proportional to 78,490.24, 108,261.92 and 51,624.32 is: 71,205.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,490.24 : 108,261.92 = 51,624.32 : x
  2. Step 2: Convert to fraction form
    78,490.24/108,261.92 = 51,624.32/x
  3. Step 3: Cross multiply
    78,490.24x = 108,261.92 × 51,624.32
  4. Step 4: Simplify right side
    78,490.24x = 5,588,948,001.89
  5. Step 5: Solve for x
    x = 5,588,948,001.89/78,490.24
  6. Step 6: Final answer
    x = 71,205.64

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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.