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Finding the Fourth Proportional to 66,695.36, 92,028.16 and 39,848.64

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Solution

The fourth proportional to 66,695.36, 92,028.16 and 39,848.64 is: 54,984.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,695.36 : 92,028.16 = 39,848.64 : x
  2. Step 2: Convert to fraction form
    66,695.36/92,028.16 = 39,848.64/x
  3. Step 3: Cross multiply
    66,695.36x = 92,028.16 × 39,848.64
  4. Step 4: Simplify right side
    66,695.36x = 3,667,197,017.70
  5. Step 5: Solve for x
    x = 3,667,197,017.70/66,695.36
  6. Step 6: Final answer
    x = 54,984.29

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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.