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Finding the Fourth Proportional to 70,429.52, 105,650.04 and 28,876.88

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Solution

The fourth proportional to 70,429.52, 105,650.04 and 28,876.88 is: 43,317.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,429.52 : 105,650.04 = 28,876.88 : x
  2. Step 2: Convert to fraction form
    70,429.52/105,650.04 = 28,876.88/x
  3. Step 3: Cross multiply
    70,429.52x = 105,650.04 × 28,876.88
  4. Step 4: Simplify right side
    70,429.52x = 3,050,843,527.08
  5. Step 5: Solve for x
    x = 3,050,843,527.08/70,429.52
  6. Step 6: Final answer
    x = 43,317.68

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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.