Home / 78,586.64-117,877.05-34,213.49

Finding the Fourth Proportional to 78,586.64, 117,877.05 and 34,213.49

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Solution

The fourth proportional to 78,586.64, 117,877.05 and 34,213.49 is: 51,318.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586.64 : 117,877.05 = 34,213.49 : x
  2. Step 2: Convert to fraction form
    78,586.64/117,877.05 = 34,213.49/x
  3. Step 3: Cross multiply
    78,586.64x = 117,877.05 × 34,213.49
  4. Step 4: Simplify right side
    78,586.64x = 4,032,984,682.02
  5. Step 5: Solve for x
    x = 4,032,984,682.02/78,586.64
  6. Step 6: Final answer
    x = 51,318.96

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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.