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Finding the Fourth Proportional to 70,161.60, 105,258.12 and 36,897.40

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Solution

The fourth proportional to 70,161.60, 105,258.12 and 36,897.40 is: 55,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,161.60 : 105,258.12 = 36,897.40 : x
  2. Step 2: Convert to fraction form
    70,161.60/105,258.12 = 36,897.40/x
  3. Step 3: Cross multiply
    70,161.60x = 105,258.12 × 36,897.40
  4. Step 4: Simplify right side
    70,161.60x = 3,883,750,956.89
  5. Step 5: Solve for x
    x = 3,883,750,956.89/70,161.60
  6. Step 6: Final answer
    x = 55,354.37

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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.