Home / 54,785.02-82,128.18-19,700

Finding the Fourth Proportional to 54,785.02, 82,128.18 and 19,700

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Solution

The fourth proportional to 54,785.02, 82,128.18 and 19,700 is: 29,532.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,785.02 : 82,128.18 = 19,700 : x
  2. Step 2: Convert to fraction form
    54,785.02/82,128.18 = 19,700/x
  3. Step 3: Cross multiply
    54,785.02x = 82,128.18 × 19,700
  4. Step 4: Simplify right side
    54,785.02x = 1,617,925,146.00
  5. Step 5: Solve for x
    x = 1,617,925,146.00/54,785.02
  6. Step 6: Final answer
    x = 29,532.25

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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.