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Finding the Fourth Proportional to 70,586.78, 97,409.91 and 38,757.72

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Solution

The fourth proportional to 70,586.78, 97,409.91 and 38,757.72 is: 53,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,586.78 : 97,409.91 = 38,757.72 : x
  2. Step 2: Convert to fraction form
    70,586.78/97,409.91 = 38,757.72/x
  3. Step 3: Cross multiply
    70,586.78x = 97,409.91 × 38,757.72
  4. Step 4: Simplify right side
    70,586.78x = 3,775,386,017.01
  5. Step 5: Solve for x
    x = 3,775,386,017.01/70,586.78
  6. Step 6: Final answer
    x = 53,485.74

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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.