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Finding the Fourth Proportional to 61,152.48, 91,742.49 and 21,709.53

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Solution

The fourth proportional to 61,152.48, 91,742.49 and 21,709.53 is: 32,569.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,152.48 : 91,742.49 = 21,709.53 : x
  2. Step 2: Convert to fraction form
    61,152.48/91,742.49 = 21,709.53/x
  3. Step 3: Cross multiply
    61,152.48x = 91,742.49 × 21,709.53
  4. Step 4: Simplify right side
    61,152.48x = 1,991,686,338.93
  5. Step 5: Solve for x
    x = 1,991,686,338.93/61,152.48
  6. Step 6: Final answer
    x = 32,569.18

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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.