Home / 40,011,135.36-55,215,422.81-21,676,420.86

Finding the Fourth Proportional to 40,011,135.36, 55,215,422.81 and 21,676,420.86

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Solution

The fourth proportional to 40,011,135.36, 55,215,422.81 and 21,676,420.86 is: 29,913,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,135.36 : 55,215,422.81 = 21,676,420.86 : x
  2. Step 2: Convert to fraction form
    40,011,135.36/55,215,422.81 = 21,676,420.86/x
  3. Step 3: Cross multiply
    40,011,135.36x = 55,215,422.81 × 21,676,420.86
  4. Step 4: Simplify right side
    40,011,135.36x = 1,196,872,742,558,250.50
  5. Step 5: Solve for x
    x = 1,196,872,742,558,250.50/40,011,135.36
  6. Step 6: Final answer
    x = 29,913,491.13

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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.