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Finding the Fourth Proportional to 58,470.80, 87,707 and 19,028.12

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Solution

The fourth proportional to 58,470.80, 87,707 and 19,028.12 is: 28,542.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,470.80 : 87,707 = 19,028.12 : x
  2. Step 2: Convert to fraction form
    58,470.80/87,707 = 19,028.12/x
  3. Step 3: Cross multiply
    58,470.80x = 87,707 × 19,028.12
  4. Step 4: Simplify right side
    58,470.80x = 1,668,899,320.84
  5. Step 5: Solve for x
    x = 1,668,899,320.84/58,470.80
  6. Step 6: Final answer
    x = 28,542.44

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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.