Home / 40,011,135.71-55,215,423.31-21,676,421.21

Finding the Fourth Proportional to 40,011,135.71, 55,215,423.31 and 21,676,421.21

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Solution

The fourth proportional to 40,011,135.71, 55,215,423.31 and 21,676,421.21 is: 29,913,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,135.71 : 55,215,423.31 = 21,676,421.21 : x
  2. Step 2: Convert to fraction form
    40,011,135.71/55,215,423.31 = 21,676,421.21/x
  3. Step 3: Cross multiply
    40,011,135.71x = 55,215,423.31 × 21,676,421.21
  4. Step 4: Simplify right side
    40,011,135.71x = 1,196,872,772,956,012.50
  5. Step 5: Solve for x
    x = 1,196,872,772,956,012.50/40,011,135.71
  6. Step 6: Final answer
    x = 29,913,491.62

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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.