Home / 31,347,105.10-47,020,657.65-21,143,437.90

Finding the Fourth Proportional to 31,347,105.10, 47,020,657.65 and 21,143,437.90

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Solution

The fourth proportional to 31,347,105.10, 47,020,657.65 and 21,143,437.90 is: 31,715,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347,105.10 : 47,020,657.65 = 21,143,437.90 : x
  2. Step 2: Convert to fraction form
    31,347,105.10/47,020,657.65 = 21,143,437.90/x
  3. Step 3: Cross multiply
    31,347,105.10x = 47,020,657.65 × 21,143,437.90
  4. Step 4: Simplify right side
    31,347,105.10x = 994,178,355,039,934.88
  5. Step 5: Solve for x
    x = 994,178,355,039,934.88/31,347,105.10
  6. Step 6: Final answer
    x = 31,715,156.85

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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.