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Finding the Fourth Proportional to 61,130.02, 91,664.79 and 21,681.22

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Solution

The fourth proportional to 61,130.02, 91,664.79 and 21,681.22 is: 32,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,130.02 : 91,664.79 = 21,681.22 : x
  2. Step 2: Convert to fraction form
    61,130.02/91,664.79 = 21,681.22/x
  3. Step 3: Cross multiply
    61,130.02x = 91,664.79 × 21,681.22
  4. Step 4: Simplify right side
    61,130.02x = 1,987,404,478.24
  5. Step 5: Solve for x
    x = 1,987,404,478.24/61,130.02
  6. Step 6: Final answer
    x = 32,511.10

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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.