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Finding the Fourth Proportional to 70,757.48, 106,135.74 and 21,509.48

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Solution

The fourth proportional to 70,757.48, 106,135.74 and 21,509.48 is: 32,264.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,757.48 : 106,135.74 = 21,509.48 : x
  2. Step 2: Convert to fraction form
    70,757.48/106,135.74 = 21,509.48/x
  3. Step 3: Cross multiply
    70,757.48x = 106,135.74 × 21,509.48
  4. Step 4: Simplify right side
    70,757.48x = 2,282,924,576.82
  5. Step 5: Solve for x
    x = 2,282,924,576.82/70,757.48
  6. Step 6: Final answer
    x = 32,264.07

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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.