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Finding the Fourth Proportional to 70,272.77, 96,978.47 and 38,443.41

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Solution

The fourth proportional to 70,272.77, 96,978.47 and 38,443.41 is: 53,053.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,272.77 : 96,978.47 = 38,443.41 : x
  2. Step 2: Convert to fraction form
    70,272.77/96,978.47 = 38,443.41/x
  3. Step 3: Cross multiply
    70,272.77x = 96,978.47 × 38,443.41
  4. Step 4: Simplify right side
    70,272.77x = 3,728,182,891.17
  5. Step 5: Solve for x
    x = 3,728,182,891.17/70,272.77
  6. Step 6: Final answer
    x = 53,053.03

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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.