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Finding the Fourth Proportional to 70,534.77, 105,775.46 and 28,400.49

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Solution

The fourth proportional to 70,534.77, 105,775.46 and 28,400.49 is: 42,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,534.77 : 105,775.46 = 28,400.49 : x
  2. Step 2: Convert to fraction form
    70,534.77/105,775.46 = 28,400.49/x
  3. Step 3: Cross multiply
    70,534.77x = 105,775.46 × 28,400.49
  4. Step 4: Simplify right side
    70,534.77x = 3,004,074,751.97
  5. Step 5: Solve for x
    x = 3,004,074,751.97/70,534.77
  6. Step 6: Final answer
    x = 42,589.98

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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.