Home / 45,140.67-67,708.98-21,430.89

Finding the Fourth Proportional to 45,140.67, 67,708.98 and 21,430.89

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Solution

The fourth proportional to 45,140.67, 67,708.98 and 21,430.89 is: 32,145.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,140.67 : 67,708.98 = 21,430.89 : x
  2. Step 2: Convert to fraction form
    45,140.67/67,708.98 = 21,430.89/x
  3. Step 3: Cross multiply
    45,140.67x = 67,708.98 × 21,430.89
  4. Step 4: Simplify right side
    45,140.67x = 1,451,063,702.39
  5. Step 5: Solve for x
    x = 1,451,063,702.39/45,140.67
  6. Step 6: Final answer
    x = 32,145.37

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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.