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Finding the Fourth Proportional to 70,485.42, 97,274.31 and 38,654.33

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Solution

The fourth proportional to 70,485.42, 97,274.31 and 38,654.33 is: 53,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,485.42 : 97,274.31 = 38,654.33 : x
  2. Step 2: Convert to fraction form
    70,485.42/97,274.31 = 38,654.33/x
  3. Step 3: Cross multiply
    70,485.42x = 97,274.31 × 38,654.33
  4. Step 4: Simplify right side
    70,485.42x = 3,760,073,279.26
  5. Step 5: Solve for x
    x = 3,760,073,279.26/70,485.42
  6. Step 6: Final answer
    x = 53,345.41

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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.