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Finding the Fourth Proportional to 70,807.42, 97,713.48 and 38,975.64

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Solution

The fourth proportional to 70,807.42, 97,713.48 and 38,975.64 is: 53,785.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,807.42 : 97,713.48 = 38,975.64 : x
  2. Step 2: Convert to fraction form
    70,807.42/97,713.48 = 38,975.64/x
  3. Step 3: Cross multiply
    70,807.42x = 97,713.48 × 38,975.64
  4. Step 4: Simplify right side
    70,807.42x = 3,808,445,419.63
  5. Step 5: Solve for x
    x = 3,808,445,419.63/70,807.42
  6. Step 6: Final answer
    x = 53,785.97

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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.