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Finding the Fourth Proportional to 66,573.16, 91,882.88 and 39,348.16

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Solution

The fourth proportional to 66,573.16, 91,882.88 and 39,348.16 is: 54,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,573.16 : 91,882.88 = 39,348.16 : x
  2. Step 2: Convert to fraction form
    66,573.16/91,882.88 = 39,348.16/x
  3. Step 3: Cross multiply
    66,573.16x = 91,882.88 × 39,348.16
  4. Step 4: Simplify right side
    66,573.16x = 3,615,422,263.50
  5. Step 5: Solve for x
    x = 3,615,422,263.50/66,573.16
  6. Step 6: Final answer
    x = 54,307.51

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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.