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Finding the Fourth Proportional to 70,548.78, 97,372.35 and 42,270.87

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Solution

The fourth proportional to 70,548.78, 97,372.35 and 42,270.87 is: 58,342.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,548.78 : 97,372.35 = 42,270.87 : x
  2. Step 2: Convert to fraction form
    70,548.78/97,372.35 = 42,270.87/x
  3. Step 3: Cross multiply
    70,548.78x = 97,372.35 × 42,270.87
  4. Step 4: Simplify right side
    70,548.78x = 4,116,013,948.44
  5. Step 5: Solve for x
    x = 4,116,013,948.44/70,548.78
  6. Step 6: Final answer
    x = 58,342.81

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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.