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Finding the Fourth Proportional to 70,909.60, 106,364.40 and 51,372.40

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Solution

The fourth proportional to 70,909.60, 106,364.40 and 51,372.40 is: 77,058.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,909.60 : 106,364.40 = 51,372.40 : x
  2. Step 2: Convert to fraction form
    70,909.60/106,364.40 = 51,372.40/x
  3. Step 3: Cross multiply
    70,909.60x = 106,364.40 × 51,372.40
  4. Step 4: Simplify right side
    70,909.60x = 5,464,194,502.56
  5. Step 5: Solve for x
    x = 5,464,194,502.56/70,909.60
  6. Step 6: Final answer
    x = 77,058.60

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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.