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Finding the Fourth Proportional to 58,143.84, 87,223.92 and 18,687.68

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Solution

The fourth proportional to 58,143.84, 87,223.92 and 18,687.68 is: 28,034.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,143.84 : 87,223.92 = 18,687.68 : x
  2. Step 2: Convert to fraction form
    58,143.84/87,223.92 = 18,687.68/x
  3. Step 3: Cross multiply
    58,143.84x = 87,223.92 × 18,687.68
  4. Step 4: Simplify right side
    58,143.84x = 1,630,012,705.31
  5. Step 5: Solve for x
    x = 1,630,012,705.31/58,143.84
  6. Step 6: Final answer
    x = 28,034.14

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1.5x scale

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.