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Finding the Fourth Proportional to 66,320.51, 99,347.52 and 32,939.60

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Solution

The fourth proportional to 66,320.51, 99,347.52 and 32,939.60 is: 49,343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,320.51 : 99,347.52 = 32,939.60 : x
  2. Step 2: Convert to fraction form
    66,320.51/99,347.52 = 32,939.60/x
  3. Step 3: Cross multiply
    66,320.51x = 99,347.52 × 32,939.60
  4. Step 4: Simplify right side
    66,320.51x = 3,272,467,569.79
  5. Step 5: Solve for x
    x = 3,272,467,569.79/66,320.51
  6. Step 6: Final answer
    x = 49,343.22

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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.