Home / 52,462.36-78,702.26-20,872.72

Finding the Fourth Proportional to 52,462.36, 78,702.26 and 20,872.72

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Solution

The fourth proportional to 52,462.36, 78,702.26 and 20,872.72 is: 31,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,462.36 : 78,702.26 = 20,872.72 : x
  2. Step 2: Convert to fraction form
    52,462.36/78,702.26 = 20,872.72/x
  3. Step 3: Cross multiply
    52,462.36x = 78,702.26 × 20,872.72
  4. Step 4: Simplify right side
    52,462.36x = 1,642,730,131.98
  5. Step 5: Solve for x
    x = 1,642,730,131.98/52,462.36
  6. Step 6: Final answer
    x = 31,312.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.