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Finding the Fourth Proportional to 61,133.40, 91,696.32 and 21,685.32

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Solution

The fourth proportional to 61,133.40, 91,696.32 and 21,685.32 is: 32,526.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,133.40 : 91,696.32 = 21,685.32 : x
  2. Step 2: Convert to fraction form
    61,133.40/91,696.32 = 21,685.32/x
  3. Step 3: Cross multiply
    61,133.40x = 91,696.32 × 21,685.32
  4. Step 4: Simplify right side
    61,133.40x = 1,988,464,042.02
  5. Step 5: Solve for x
    x = 1,988,464,042.02/61,133.40
  6. Step 6: Final answer
    x = 32,526.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.