Home / 40,785.12-61,172.28-18,574.56

Finding the Fourth Proportional to 40,785.12, 61,172.28 and 18,574.56

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Solution

The fourth proportional to 40,785.12, 61,172.28 and 18,574.56 is: 27,859.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,785.12 : 61,172.28 = 18,574.56 : x
  2. Step 2: Convert to fraction form
    40,785.12/61,172.28 = 18,574.56/x
  3. Step 3: Cross multiply
    40,785.12x = 61,172.28 × 18,574.56
  4. Step 4: Simplify right side
    40,785.12x = 1,136,248,185.20
  5. Step 5: Solve for x
    x = 1,136,248,185.20/40,785.12
  6. Step 6: Final answer
    x = 27,859.38

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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.