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Finding the Fourth Proportional to 58,053.73, 87,119.43 and 21,117.73

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Solution

The fourth proportional to 58,053.73, 87,119.43 and 21,117.73 is: 31,690.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,053.73 : 87,119.43 = 21,117.73 : x
  2. Step 2: Convert to fraction form
    58,053.73/87,119.43 = 21,117.73/x
  3. Step 3: Cross multiply
    58,053.73x = 87,119.43 × 21,117.73
  4. Step 4: Simplify right side
    58,053.73x = 1,839,764,600.49
  5. Step 5: Solve for x
    x = 1,839,764,600.49/58,053.73
  6. Step 6: Final answer
    x = 31,690.72

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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.