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Finding the Fourth Proportional to 58,000.86, 86,990.40 and 20,559.42

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Solution

The fourth proportional to 58,000.86, 86,990.40 and 20,559.42 is: 30,835.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,000.86 : 86,990.40 = 20,559.42 : x
  2. Step 2: Convert to fraction form
    58,000.86/86,990.40 = 20,559.42/x
  3. Step 3: Cross multiply
    58,000.86x = 86,990.40 × 20,559.42
  4. Step 4: Simplify right side
    58,000.86x = 1,788,472,169.57
  5. Step 5: Solve for x
    x = 1,788,472,169.57/58,000.86
  6. Step 6: Final answer
    x = 30,835.27

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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.