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Finding the Fourth Proportional to 70,118.90, 96,762.74 and 38,288.06

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Solution

The fourth proportional to 70,118.90, 96,762.74 and 38,288.06 is: 52,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118.90 : 96,762.74 = 38,288.06 : x
  2. Step 2: Convert to fraction form
    70,118.90/96,762.74 = 38,288.06/x
  3. Step 3: Cross multiply
    70,118.90x = 96,762.74 × 38,288.06
  4. Step 4: Simplify right side
    70,118.90x = 3,704,857,594.88
  5. Step 5: Solve for x
    x = 3,704,857,594.88/70,118.90
  6. Step 6: Final answer
    x = 52,836.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.