Home / 43,545.18-65,206.98-28,709.09

Finding the Fourth Proportional to 43,545.18, 65,206.98 and 28,709.09

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Solution

The fourth proportional to 43,545.18, 65,206.98 and 28,709.09 is: 42,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,545.18 : 65,206.98 = 28,709.09 : x
  2. Step 2: Convert to fraction form
    43,545.18/65,206.98 = 28,709.09/x
  3. Step 3: Cross multiply
    43,545.18x = 65,206.98 × 28,709.09
  4. Step 4: Simplify right side
    43,545.18x = 1,872,032,731.41
  5. Step 5: Solve for x
    x = 1,872,032,731.41/43,545.18
  6. Step 6: Final answer
    x = 42,990.58

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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.