Home / 42,011,257.86-63,018,855.09-20,420,122.23

Finding the Fourth Proportional to 42,011,257.86, 63,018,855.09 and 20,420,122.23

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Solution

The fourth proportional to 42,011,257.86, 63,018,855.09 and 20,420,122.23 is: 30,631,140.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,011,257.86 : 63,018,855.09 = 20,420,122.23 : x
  2. Step 2: Convert to fraction form
    42,011,257.86/63,018,855.09 = 20,420,122.23/x
  3. Step 3: Cross multiply
    42,011,257.86x = 63,018,855.09 × 20,420,122.23
  4. Step 4: Simplify right side
    42,011,257.86x = 1,286,852,723,732,457.75
  5. Step 5: Solve for x
    x = 1,286,852,723,732,457.75/42,011,257.86
  6. Step 6: Final answer
    x = 30,631,140.06

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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.