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Finding the Fourth Proportional to 88,043.40, 121,505.92 and 49,802.98

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Solution

The fourth proportional to 88,043.40, 121,505.92 and 49,802.98 is: 68,731.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,043.40 : 121,505.92 = 49,802.98 : x
  2. Step 2: Convert to fraction form
    88,043.40/121,505.92 = 49,802.98/x
  3. Step 3: Cross multiply
    88,043.40x = 121,505.92 × 49,802.98
  4. Step 4: Simplify right side
    88,043.40x = 6,051,356,903.64
  5. Step 5: Solve for x
    x = 6,051,356,903.64/88,043.40
  6. Step 6: Final answer
    x = 68,731.52

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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.