Home / 42,509,847.40-63,764,771.10-20,986,486.90

Finding the Fourth Proportional to 42,509,847.40, 63,764,771.10 and 20,986,486.90

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Solution

The fourth proportional to 42,509,847.40, 63,764,771.10 and 20,986,486.90 is: 31,479,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,509,847.40 : 63,764,771.10 = 20,986,486.90 : x
  2. Step 2: Convert to fraction form
    42,509,847.40/63,764,771.10 = 20,986,486.90/x
  3. Step 3: Cross multiply
    42,509,847.40x = 63,764,771.10 × 20,986,486.90
  4. Step 4: Simplify right side
    42,509,847.40x = 1,338,198,533,371,648.50
  5. Step 5: Solve for x
    x = 1,338,198,533,371,648.50/42,509,847.40
  6. Step 6: Final answer
    x = 31,479,730.35

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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.