Home / 40,011,135.21-55,215,422.62-21,676,420.71

Finding the Fourth Proportional to 40,011,135.21, 55,215,422.62 and 21,676,420.71

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Solution

The fourth proportional to 40,011,135.21, 55,215,422.62 and 21,676,420.71 is: 29,913,490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,135.21 : 55,215,422.62 = 21,676,420.71 : x
  2. Step 2: Convert to fraction form
    40,011,135.21/55,215,422.62 = 21,676,420.71/x
  3. Step 3: Cross multiply
    40,011,135.21x = 55,215,422.62 × 21,676,420.71
  4. Step 4: Simplify right side
    40,011,135.21x = 1,196,872,730,337,379.50
  5. Step 5: Solve for x
    x = 1,196,872,730,337,379.50/40,011,135.21
  6. Step 6: Final answer
    x = 29,913,490.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.