Home / 40,011,143.07-55,215,433.64-21,676,428.57

Finding the Fourth Proportional to 40,011,143.07, 55,215,433.64 and 21,676,428.57

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Solution

The fourth proportional to 40,011,143.07, 55,215,433.64 and 21,676,428.57 is: 29,913,501.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,143.07 : 55,215,433.64 = 21,676,428.57 : x
  2. Step 2: Convert to fraction form
    40,011,143.07/55,215,433.64 = 21,676,428.57/x
  3. Step 3: Cross multiply
    40,011,143.07x = 55,215,433.64 × 21,676,428.57
  4. Step 4: Simplify right side
    40,011,143.07x = 1,196,873,403,313,226.25
  5. Step 5: Solve for x
    x = 1,196,873,403,313,226.25/40,011,143.07
  6. Step 6: Final answer
    x = 29,913,501.88

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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.