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Finding the Fourth Proportional to 67,322.40, 92,871.84 and 43,440

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Solution

The fourth proportional to 67,322.40, 92,871.84 and 43,440 is: 59,925.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,322.40 : 92,871.84 = 43,440 : x
  2. Step 2: Convert to fraction form
    67,322.40/92,871.84 = 43,440/x
  3. Step 3: Cross multiply
    67,322.40x = 92,871.84 × 43,440
  4. Step 4: Simplify right side
    67,322.40x = 4,034,352,729.60
  5. Step 5: Solve for x
    x = 4,034,352,729.60/67,322.40
  6. Step 6: Final answer
    x = 59,925.86

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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.