Home / 52,461.36-78,700.76-20,871.72

Finding the Fourth Proportional to 52,461.36, 78,700.76 and 20,871.72

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Solution

The fourth proportional to 52,461.36, 78,700.76 and 20,871.72 is: 31,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,461.36 : 78,700.76 = 20,871.72 : x
  2. Step 2: Convert to fraction form
    52,461.36/78,700.76 = 20,871.72/x
  3. Step 3: Cross multiply
    52,461.36x = 78,700.76 × 20,871.72
  4. Step 4: Simplify right side
    52,461.36x = 1,642,620,122.15
  5. Step 5: Solve for x
    x = 1,642,620,122.15/52,461.36
  6. Step 6: Final answer
    x = 31,311.05

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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.