Home / 40,640.20-60,960.30-14,345.80

Finding the Fourth Proportional to 40,640.20, 60,960.30 and 14,345.80

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Solution

The fourth proportional to 40,640.20, 60,960.30 and 14,345.80 is: 21,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,640.20 : 60,960.30 = 14,345.80 : x
  2. Step 2: Convert to fraction form
    40,640.20/60,960.30 = 14,345.80/x
  3. Step 3: Cross multiply
    40,640.20x = 60,960.30 × 14,345.80
  4. Step 4: Simplify right side
    40,640.20x = 874,524,271.74
  5. Step 5: Solve for x
    x = 874,524,271.74/40,640.20
  6. Step 6: Final answer
    x = 21,518.70

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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.