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Finding the Fourth Proportional to 70,788.90, 106,150.62 and 26,403.78

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Solution

The fourth proportional to 70,788.90, 106,150.62 and 26,403.78 is: 39,593.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,788.90 : 106,150.62 = 26,403.78 : x
  2. Step 2: Convert to fraction form
    70,788.90/106,150.62 = 26,403.78/x
  3. Step 3: Cross multiply
    70,788.90x = 106,150.62 × 26,403.78
  4. Step 4: Simplify right side
    70,788.90x = 2,802,777,617.34
  5. Step 5: Solve for x
    x = 2,802,777,617.34/70,788.90
  6. Step 6: Final answer
    x = 39,593.46

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1.5x scale

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.