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Finding the Fourth Proportional to 70,233.95, 105,351.01 and 28,680.95

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Solution

The fourth proportional to 70,233.95, 105,351.01 and 28,680.95 is: 43,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,233.95 : 105,351.01 = 28,680.95 : x
  2. Step 2: Convert to fraction form
    70,233.95/105,351.01 = 28,680.95/x
  3. Step 3: Cross multiply
    70,233.95x = 105,351.01 × 28,680.95
  4. Step 4: Simplify right side
    70,233.95x = 3,021,566,451.80
  5. Step 5: Solve for x
    x = 3,021,566,451.80/70,233.95
  6. Step 6: Final answer
    x = 43,021.45

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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.