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Finding the Fourth Proportional to 70,568.61, 97,381.62 and 38,738.04

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Solution

The fourth proportional to 70,568.61, 97,381.62 and 38,738.04 is: 53,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,568.61 : 97,381.62 = 38,738.04 : x
  2. Step 2: Convert to fraction form
    70,568.61/97,381.62 = 38,738.04/x
  3. Step 3: Cross multiply
    70,568.61x = 97,381.62 × 38,738.04
  4. Step 4: Simplify right side
    70,568.61x = 3,772,373,090.82
  5. Step 5: Solve for x
    x = 3,772,373,090.82/70,568.61
  6. Step 6: Final answer
    x = 53,456.81

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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.