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Finding the Fourth Proportional to 66,386.40, 99,608.88 and 35,214

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Solution

The fourth proportional to 66,386.40, 99,608.88 and 35,214 is: 52,836.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.40 : 99,608.88 = 35,214 : x
  2. Step 2: Convert to fraction form
    66,386.40/99,608.88 = 35,214/x
  3. Step 3: Cross multiply
    66,386.40x = 99,608.88 × 35,214
  4. Step 4: Simplify right side
    66,386.40x = 3,507,627,100.32
  5. Step 5: Solve for x
    x = 3,507,627,100.32/66,386.40
  6. Step 6: Final answer
    x = 52,836.53

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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.