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Finding the Fourth Proportional to 58,683.86, 87,990.63 and 18,685.56

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Solution

The fourth proportional to 58,683.86, 87,990.63 and 18,685.56 is: 28,017.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,683.86 : 87,990.63 = 18,685.56 : x
  2. Step 2: Convert to fraction form
    58,683.86/87,990.63 = 18,685.56/x
  3. Step 3: Cross multiply
    58,683.86x = 87,990.63 × 18,685.56
  4. Step 4: Simplify right side
    58,683.86x = 1,644,154,196.30
  5. Step 5: Solve for x
    x = 1,644,154,196.30/58,683.86
  6. Step 6: Final answer
    x = 28,017.14

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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.