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Finding the Fourth Proportional to 70,225.52, 105,349.44 and 28,105.52

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Solution

The fourth proportional to 70,225.52, 105,349.44 and 28,105.52 is: 42,162.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,225.52 : 105,349.44 = 28,105.52 : x
  2. Step 2: Convert to fraction form
    70,225.52/105,349.44 = 28,105.52/x
  3. Step 3: Cross multiply
    70,225.52x = 105,349.44 × 28,105.52
  4. Step 4: Simplify right side
    70,225.52x = 2,960,900,792.91
  5. Step 5: Solve for x
    x = 2,960,900,792.91/70,225.52
  6. Step 6: Final answer
    x = 42,162.75

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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.