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Finding the Fourth Proportional to 70,454.88, 105,688.80 and 50,276.16

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Solution

The fourth proportional to 70,454.88, 105,688.80 and 50,276.16 is: 75,418.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,454.88 : 105,688.80 = 50,276.16 : x
  2. Step 2: Convert to fraction form
    70,454.88/105,688.80 = 50,276.16/x
  3. Step 3: Cross multiply
    70,454.88x = 105,688.80 × 50,276.16
  4. Step 4: Simplify right side
    70,454.88x = 5,313,627,019.01
  5. Step 5: Solve for x
    x = 5,313,627,019.01/70,454.88
  6. Step 6: Final answer
    x = 75,418.86

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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.