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Finding the Fourth Proportional to 58,086.99, 87,169.57 and 20,647.58

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Solution

The fourth proportional to 58,086.99, 87,169.57 and 20,647.58 is: 30,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,086.99 : 87,169.57 = 20,647.58 : x
  2. Step 2: Convert to fraction form
    58,086.99/87,169.57 = 20,647.58/x
  3. Step 3: Cross multiply
    58,086.99x = 87,169.57 × 20,647.58
  4. Step 4: Simplify right side
    58,086.99x = 1,799,840,182.67
  5. Step 5: Solve for x
    x = 1,799,840,182.67/58,086.99
  6. Step 6: Final answer
    x = 30,985.25

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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.