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Finding the Fourth Proportional to 47,996, 66,339.36 and 42,287.12

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Solution

The fourth proportional to 47,996, 66,339.36 and 42,287.12 is: 58,448.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,996 : 66,339.36 = 42,287.12 : x
  2. Step 2: Convert to fraction form
    47,996/66,339.36 = 42,287.12/x
  3. Step 3: Cross multiply
    47,996x = 66,339.36 × 42,287.12
  4. Step 4: Simplify right side
    47,996x = 2,805,300,477.04
  5. Step 5: Solve for x
    x = 2,805,300,477.04/47,996
  6. Step 6: Final answer
    x = 58,448.63

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Double scale
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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.