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Finding the Fourth Proportional to 88,263.66, 121,802.41 and 47,978.44

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Solution

The fourth proportional to 88,263.66, 121,802.41 and 47,978.44 is: 66,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,263.66 : 121,802.41 = 47,978.44 : x
  2. Step 2: Convert to fraction form
    88,263.66/121,802.41 = 47,978.44/x
  3. Step 3: Cross multiply
    88,263.66x = 121,802.41 × 47,978.44
  4. Step 4: Simplify right side
    88,263.66x = 5,843,889,375.51
  5. Step 5: Solve for x
    x = 5,843,889,375.51/88,263.66
  6. Step 6: Final answer
    x = 66,209.46

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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.