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Finding the Fourth Proportional to 70,300.57, 105,486.22 and 28,210.73

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Solution

The fourth proportional to 70,300.57, 105,486.22 and 28,210.73 is: 42,330.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,300.57 : 105,486.22 = 28,210.73 : x
  2. Step 2: Convert to fraction form
    70,300.57/105,486.22 = 28,210.73/x
  3. Step 3: Cross multiply
    70,300.57x = 105,486.22 × 28,210.73
  4. Step 4: Simplify right side
    70,300.57x = 2,975,843,451.68
  5. Step 5: Solve for x
    x = 2,975,843,451.68/70,300.57
  6. Step 6: Final answer
    x = 42,330.29

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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.