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Finding the Fourth Proportional to 88,045.63, 121,368.16 and 53,990.97

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Solution

The fourth proportional to 88,045.63, 121,368.16 and 53,990.97 is: 74,424.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,045.63 : 121,368.16 = 53,990.97 : x
  2. Step 2: Convert to fraction form
    88,045.63/121,368.16 = 53,990.97/x
  3. Step 3: Cross multiply
    88,045.63x = 121,368.16 × 53,990.97
  4. Step 4: Simplify right side
    88,045.63x = 6,552,784,676.87
  5. Step 5: Solve for x
    x = 6,552,784,676.87/88,045.63
  6. Step 6: Final answer
    x = 74,424.87

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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.