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Finding the Fourth Proportional to 101,422.44, 139,959.63 and 56,099.70

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Solution

The fourth proportional to 101,422.44, 139,959.63 and 56,099.70 is: 77,415.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,422.44 : 139,959.63 = 56,099.70 : x
  2. Step 2: Convert to fraction form
    101,422.44/139,959.63 = 56,099.70/x
  3. Step 3: Cross multiply
    101,422.44x = 139,959.63 × 56,099.70
  4. Step 4: Simplify right side
    101,422.44x = 7,851,693,255.11
  5. Step 5: Solve for x
    x = 7,851,693,255.11/101,422.44
  6. Step 6: Final answer
    x = 77,415.74

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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.