Home / 63,380.40-87,631.92-55,507.20

Finding the Fourth Proportional to 63,380.40, 87,631.92 and 55,507.20

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Solution

The fourth proportional to 63,380.40, 87,631.92 and 55,507.20 is: 76,746.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,380.40 : 87,631.92 = 55,507.20 : x
  2. Step 2: Convert to fraction form
    63,380.40/87,631.92 = 55,507.20/x
  3. Step 3: Cross multiply
    63,380.40x = 87,631.92 × 55,507.20
  4. Step 4: Simplify right side
    63,380.40x = 4,864,202,509.82
  5. Step 5: Solve for x
    x = 4,864,202,509.82/63,380.40
  6. Step 6: Final answer
    x = 76,746.16

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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.