Home / 57,156.19-85,738.35-19,715.69

Finding the Fourth Proportional to 57,156.19, 85,738.35 and 19,715.69

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Solution

The fourth proportional to 57,156.19, 85,738.35 and 19,715.69 is: 29,574.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,156.19 : 85,738.35 = 19,715.69 : x
  2. Step 2: Convert to fraction form
    57,156.19/85,738.35 = 19,715.69/x
  3. Step 3: Cross multiply
    57,156.19x = 85,738.35 × 19,715.69
  4. Step 4: Simplify right side
    57,156.19x = 1,690,390,631.13
  5. Step 5: Solve for x
    x = 1,690,390,631.13/57,156.19
  6. Step 6: Final answer
    x = 29,574.94

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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.