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Finding the Fourth Proportional to 70,489.71, 97,266.81 and 40,276.98

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Solution

The fourth proportional to 70,489.71, 97,266.81 and 40,276.98 is: 55,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,489.71 : 97,266.81 = 40,276.98 : x
  2. Step 2: Convert to fraction form
    70,489.71/97,266.81 = 40,276.98/x
  3. Step 3: Cross multiply
    70,489.71x = 97,266.81 × 40,276.98
  4. Step 4: Simplify right side
    70,489.71x = 3,917,613,361.03
  5. Step 5: Solve for x
    x = 3,917,613,361.03/70,489.71
  6. Step 6: Final answer
    x = 55,577.10

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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.