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Finding the Fourth Proportional to 61,126.31, 91,698.04 and 57,764.81

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Solution

The fourth proportional to 61,126.31, 91,698.04 and 57,764.81 is: 86,655.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,126.31 : 91,698.04 = 57,764.81 : x
  2. Step 2: Convert to fraction form
    61,126.31/91,698.04 = 57,764.81/x
  3. Step 3: Cross multiply
    61,126.31x = 91,698.04 × 57,764.81
  4. Step 4: Simplify right side
    61,126.31x = 5,296,920,159.42
  5. Step 5: Solve for x
    x = 5,296,920,159.42/61,126.31
  6. Step 6: Final answer
    x = 86,655.32

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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.