Home / 70,268.50-105,509.64-61,378.75

Finding the Fourth Proportional to 70,268.50, 105,509.64 and 61,378.75

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Solution

The fourth proportional to 70,268.50, 105,509.64 and 61,378.75 is: 92,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,268.50 : 105,509.64 = 61,378.75 : x
  2. Step 2: Convert to fraction form
    70,268.50/105,509.64 = 61,378.75/x
  3. Step 3: Cross multiply
    70,268.50x = 105,509.64 × 61,378.75
  4. Step 4: Simplify right side
    70,268.50x = 6,476,049,816.15
  5. Step 5: Solve for x
    x = 6,476,049,816.15/70,268.50
  6. Step 6: Final answer
    x = 92,161.49

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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.