Home / 66,366.24-99,561.63-18,979.32

Finding the Fourth Proportional to 66,366.24, 99,561.63 and 18,979.32

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Solution

The fourth proportional to 66,366.24, 99,561.63 and 18,979.32 is: 28,472.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.24 : 99,561.63 = 18,979.32 : x
  2. Step 2: Convert to fraction form
    66,366.24/99,561.63 = 18,979.32/x
  3. Step 3: Cross multiply
    66,366.24x = 99,561.63 × 18,979.32
  4. Step 4: Simplify right side
    66,366.24x = 1,889,612,035.49
  5. Step 5: Solve for x
    x = 1,889,612,035.49/66,366.24
  6. Step 6: Final answer
    x = 28,472.49

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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.