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Finding the Fourth Proportional to 66,062.89, 91,152.48 and 39,214.36

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Solution

The fourth proportional to 66,062.89, 91,152.48 and 39,214.36 is: 54,107.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,062.89 : 91,152.48 = 39,214.36 : x
  2. Step 2: Convert to fraction form
    66,062.89/91,152.48 = 39,214.36/x
  3. Step 3: Cross multiply
    66,062.89x = 91,152.48 × 39,214.36
  4. Step 4: Simplify right side
    66,062.89x = 3,574,486,165.61
  5. Step 5: Solve for x
    x = 3,574,486,165.61/66,062.89
  6. Step 6: Final answer
    x = 54,107.32

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1.5x scale

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.