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Finding the Fourth Proportional to 67,871.61, 101,703.51 and 28,407.24

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Solution

The fourth proportional to 67,871.61, 101,703.51 and 28,407.24 is: 42,567.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,871.61 : 101,703.51 = 28,407.24 : x
  2. Step 2: Convert to fraction form
    67,871.61/101,703.51 = 28,407.24/x
  3. Step 3: Cross multiply
    67,871.61x = 101,703.51 × 28,407.24
  4. Step 4: Simplify right side
    67,871.61x = 2,889,116,017.41
  5. Step 5: Solve for x
    x = 2,889,116,017.41/67,871.61
  6. Step 6: Final answer
    x = 42,567.37

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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.