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Finding the Fourth Proportional to 78,934, 118,459.44 and 37,381.12

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Solution

The fourth proportional to 78,934, 118,459.44 and 37,381.12 is: 56,099.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,934 : 118,459.44 = 37,381.12 : x
  2. Step 2: Convert to fraction form
    78,934/118,459.44 = 37,381.12/x
  3. Step 3: Cross multiply
    78,934x = 118,459.44 × 37,381.12
  4. Step 4: Simplify right side
    78,934x = 4,428,146,541.77
  5. Step 5: Solve for x
    x = 4,428,146,541.77/78,934
  6. Step 6: Final answer
    x = 56,099.36

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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.