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Finding the Fourth Proportional to 64,272.78, 88,696.38 and 35,978.46

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Solution

The fourth proportional to 64,272.78, 88,696.38 and 35,978.46 is: 49,650.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,272.78 : 88,696.38 = 35,978.46 : x
  2. Step 2: Convert to fraction form
    64,272.78/88,696.38 = 35,978.46/x
  3. Step 3: Cross multiply
    64,272.78x = 88,696.38 × 35,978.46
  4. Step 4: Simplify right side
    64,272.78x = 3,191,159,159.97
  5. Step 5: Solve for x
    x = 3,191,159,159.97/64,272.78
  6. Step 6: Final answer
    x = 49,650.24

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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.