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Finding the Fourth Proportional to 25,124,731.20, 37,687,096.80 and 21,014,920.80

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Solution

The fourth proportional to 25,124,731.20, 37,687,096.80 and 21,014,920.80 is: 31,522,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,124,731.20 : 37,687,096.80 = 21,014,920.80 : x
  2. Step 2: Convert to fraction form
    25,124,731.20/37,687,096.80 = 21,014,920.80/x
  3. Step 3: Cross multiply
    25,124,731.20x = 37,687,096.80 × 21,014,920.80
  4. Step 4: Simplify right side
    25,124,731.20x = 791,991,354,433,933.38
  5. Step 5: Solve for x
    x = 791,991,354,433,933.38/25,124,731.20
  6. Step 6: Final answer
    x = 31,522,381.20

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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.