Home / 48,871.38-67,438.47-28,729.11

Finding the Fourth Proportional to 48,871.38, 67,438.47 and 28,729.11

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Solution

The fourth proportional to 48,871.38, 67,438.47 and 28,729.11 is: 39,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,871.38 : 67,438.47 = 28,729.11 : x
  2. Step 2: Convert to fraction form
    48,871.38/67,438.47 = 28,729.11/x
  3. Step 3: Cross multiply
    48,871.38x = 67,438.47 × 28,729.11
  4. Step 4: Simplify right side
    48,871.38x = 1,937,447,222.86
  5. Step 5: Solve for x
    x = 1,937,447,222.86/48,871.38
  6. Step 6: Final answer
    x = 39,643.80

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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.