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Finding the Fourth Proportional to 66,117.61, 91,242.42 and 35,902.51

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Solution

The fourth proportional to 66,117.61, 91,242.42 and 35,902.51 is: 49,545.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,117.61 : 91,242.42 = 35,902.51 : x
  2. Step 2: Convert to fraction form
    66,117.61/91,242.42 = 35,902.51/x
  3. Step 3: Cross multiply
    66,117.61x = 91,242.42 × 35,902.51
  4. Step 4: Simplify right side
    66,117.61x = 3,275,831,896.47
  5. Step 5: Solve for x
    x = 3,275,831,896.47/66,117.61
  6. Step 6: Final answer
    x = 49,545.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.