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Finding the Fourth Proportional to 78,696.70, 118,045.05 and 63,144.70

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Solution

The fourth proportional to 78,696.70, 118,045.05 and 63,144.70 is: 94,717.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,696.70 : 118,045.05 = 63,144.70 : x
  2. Step 2: Convert to fraction form
    78,696.70/118,045.05 = 63,144.70/x
  3. Step 3: Cross multiply
    78,696.70x = 118,045.05 × 63,144.70
  4. Step 4: Simplify right side
    78,696.70x = 7,453,919,268.74
  5. Step 5: Solve for x
    x = 7,453,919,268.74/78,696.70
  6. Step 6: Final answer
    x = 94,717.05

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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.