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Finding the Fourth Proportional to 70,369.38, 97,111.62 and 38,540.34

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Solution

The fourth proportional to 70,369.38, 97,111.62 and 38,540.34 is: 53,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,369.38 : 97,111.62 = 38,540.34 : x
  2. Step 2: Convert to fraction form
    70,369.38/97,111.62 = 38,540.34/x
  3. Step 3: Cross multiply
    70,369.38x = 97,111.62 × 38,540.34
  4. Step 4: Simplify right side
    70,369.38x = 3,742,714,852.75
  5. Step 5: Solve for x
    x = 3,742,714,852.75/70,369.38
  6. Step 6: Final answer
    x = 53,186.70

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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.