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Finding the Fourth Proportional to 68,349.39, 94,381.49 and 42,899.86

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Solution

The fourth proportional to 68,349.39, 94,381.49 and 42,899.86 is: 59,239.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,349.39 : 94,381.49 = 42,899.86 : x
  2. Step 2: Convert to fraction form
    68,349.39/94,381.49 = 42,899.86/x
  3. Step 3: Cross multiply
    68,349.39x = 94,381.49 × 42,899.86
  4. Step 4: Simplify right side
    68,349.39x = 4,048,952,707.59
  5. Step 5: Solve for x
    x = 4,048,952,707.59/68,349.39
  6. Step 6: Final answer
    x = 59,239.05

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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.