Home / 43,281.18-64,916.91-12,118.86

Finding the Fourth Proportional to 43,281.18, 64,916.91 and 12,118.86

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Solution

The fourth proportional to 43,281.18, 64,916.91 and 12,118.86 is: 18,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,281.18 : 64,916.91 = 12,118.86 : x
  2. Step 2: Convert to fraction form
    43,281.18/64,916.91 = 12,118.86/x
  3. Step 3: Cross multiply
    43,281.18x = 64,916.91 × 12,118.86
  4. Step 4: Simplify right side
    43,281.18x = 786,718,943.92
  5. Step 5: Solve for x
    x = 786,718,943.92/43,281.18
  6. Step 6: Final answer
    x = 18,176.93

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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.