Home / 42,590,439.20-63,869,912.40-13,837,512.80

Finding the Fourth Proportional to 42,590,439.20, 63,869,912.40 and 13,837,512.80

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Solution

The fourth proportional to 42,590,439.20, 63,869,912.40 and 13,837,512.80 is: 20,751,153.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,590,439.20 : 63,869,912.40 = 13,837,512.80 : x
  2. Step 2: Convert to fraction form
    42,590,439.20/63,869,912.40 = 13,837,512.80/x
  3. Step 3: Cross multiply
    42,590,439.20x = 63,869,912.40 × 13,837,512.80
  4. Step 4: Simplify right side
    42,590,439.20x = 883,800,730,369,878.75
  5. Step 5: Solve for x
    x = 883,800,730,369,878.75/42,590,439.20
  6. Step 6: Final answer
    x = 20,751,153.24

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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.