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Finding the Fourth Proportional to 70,066.79, 96,695.08 and 39,857.44

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Solution

The fourth proportional to 70,066.79, 96,695.08 and 39,857.44 is: 55,004.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,066.79 : 96,695.08 = 39,857.44 : x
  2. Step 2: Convert to fraction form
    70,066.79/96,695.08 = 39,857.44/x
  3. Step 3: Cross multiply
    70,066.79x = 96,695.08 × 39,857.44
  4. Step 4: Simplify right side
    70,066.79x = 3,854,018,008.01
  5. Step 5: Solve for x
    x = 3,854,018,008.01/70,066.79
  6. Step 6: Final answer
    x = 55,004.92

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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.