Home / 71,975.24-99,322.38-39,267.72

Finding the Fourth Proportional to 71,975.24, 99,322.38 and 39,267.72

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Solution

The fourth proportional to 71,975.24, 99,322.38 and 39,267.72 is: 54,187.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.24 : 99,322.38 = 39,267.72 : x
  2. Step 2: Convert to fraction form
    71,975.24/99,322.38 = 39,267.72/x
  3. Step 3: Cross multiply
    71,975.24x = 99,322.38 × 39,267.72
  4. Step 4: Simplify right side
    71,975.24x = 3,900,163,407.57
  5. Step 5: Solve for x
    x = 3,900,163,407.57/71,975.24
  6. Step 6: Final answer
    x = 54,187.57

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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.