Home / 47,678.49-71,506.80-21,390.75

Finding the Fourth Proportional to 47,678.49, 71,506.80 and 21,390.75

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Solution

The fourth proportional to 47,678.49, 71,506.80 and 21,390.75 is: 32,081.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,678.49 : 71,506.80 = 21,390.75 : x
  2. Step 2: Convert to fraction form
    47,678.49/71,506.80 = 21,390.75/x
  3. Step 3: Cross multiply
    47,678.49x = 71,506.80 × 21,390.75
  4. Step 4: Simplify right side
    47,678.49x = 1,529,584,082.10
  5. Step 5: Solve for x
    x = 1,529,584,082.10/47,678.49
  6. Step 6: Final answer
    x = 32,081.22

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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.