Home / 72,515.32-100,069.61-40,248.07

Finding the Fourth Proportional to 72,515.32, 100,069.61 and 40,248.07

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Solution

The fourth proportional to 72,515.32, 100,069.61 and 40,248.07 is: 55,541.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.32 : 100,069.61 = 40,248.07 : x
  2. Step 2: Convert to fraction form
    72,515.32/100,069.61 = 40,248.07/x
  3. Step 3: Cross multiply
    72,515.32x = 100,069.61 × 40,248.07
  4. Step 4: Simplify right side
    72,515.32x = 4,027,608,216.74
  5. Step 5: Solve for x
    x = 4,027,608,216.74/72,515.32
  6. Step 6: Final answer
    x = 55,541.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.