Home / 31,890,400.80-47,835,601.20-8,861,290.80

Finding the Fourth Proportional to 31,890,400.80, 47,835,601.20 and 8,861,290.80

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Solution

The fourth proportional to 31,890,400.80, 47,835,601.20 and 8,861,290.80 is: 13,291,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890,400.80 : 47,835,601.20 = 8,861,290.80 : x
  2. Step 2: Convert to fraction form
    31,890,400.80/47,835,601.20 = 8,861,290.80/x
  3. Step 3: Cross multiply
    31,890,400.80x = 47,835,601.20 × 8,861,290.80
  4. Step 4: Simplify right side
    31,890,400.80x = 423,885,172,826,029
  5. Step 5: Solve for x
    x = 423,885,172,826,029/31,890,400.80
  6. Step 6: Final answer
    x = 13,291,936.20

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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.