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Finding the Fourth Proportional to 113,307.80, 169,956.30 and 38,420.60

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Solution

The fourth proportional to 113,307.80, 169,956.30 and 38,420.60 is: 57,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,307.80 : 169,956.30 = 38,420.60 : x
  2. Step 2: Convert to fraction form
    113,307.80/169,956.30 = 38,420.60/x
  3. Step 3: Cross multiply
    113,307.80x = 169,956.30 × 38,420.60
  4. Step 4: Simplify right side
    113,307.80x = 6,529,823,019.78
  5. Step 5: Solve for x
    x = 6,529,823,019.78/113,307.80
  6. Step 6: Final answer
    x = 57,629.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.