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Finding the Fourth Proportional to 67,871.34, 101,807.02 and 21,124.24

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Solution

The fourth proportional to 67,871.34, 101,807.02 and 21,124.24 is: 31,686.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,871.34 : 101,807.02 = 21,124.24 : x
  2. Step 2: Convert to fraction form
    67,871.34/101,807.02 = 21,124.24/x
  3. Step 3: Cross multiply
    67,871.34x = 101,807.02 × 21,124.24
  4. Step 4: Simplify right side
    67,871.34x = 2,150,595,924.16
  5. Step 5: Solve for x
    x = 2,150,595,924.16/67,871.34
  6. Step 6: Final answer
    x = 31,686.36

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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.