Home / 40,011,142.74-55,215,432.96-21,676,428.24

Finding the Fourth Proportional to 40,011,142.74, 55,215,432.96 and 21,676,428.24

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Solution

The fourth proportional to 40,011,142.74, 55,215,432.96 and 21,676,428.24 is: 29,913,501.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,142.74 : 55,215,432.96 = 21,676,428.24 : x
  2. Step 2: Convert to fraction form
    40,011,142.74/55,215,432.96 = 21,676,428.24/x
  3. Step 3: Cross multiply
    40,011,142.74x = 55,215,432.96 × 21,676,428.24
  4. Step 4: Simplify right side
    40,011,142.74x = 1,196,873,370,297,970.75
  5. Step 5: Solve for x
    x = 1,196,873,370,297,970.75/40,011,142.74
  6. Step 6: Final answer
    x = 29,913,501.30

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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.