Home / 41,219,999.80-61,829,999.70-20,812,665.40

Finding the Fourth Proportional to 41,219,999.80, 61,829,999.70 and 20,812,665.40

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Solution

The fourth proportional to 41,219,999.80, 61,829,999.70 and 20,812,665.40 is: 31,218,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,219,999.80 : 61,829,999.70 = 20,812,665.40 : x
  2. Step 2: Convert to fraction form
    41,219,999.80/61,829,999.70 = 20,812,665.40/x
  3. Step 3: Cross multiply
    41,219,999.80x = 61,829,999.70 × 20,812,665.40
  4. Step 4: Simplify right side
    41,219,999.80x = 1,286,847,095,438,200.25
  5. Step 5: Solve for x
    x = 1,286,847,095,438,200.25/41,219,999.80
  6. Step 6: Final answer
    x = 31,218,998.10

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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.