Home / 40,011,142.53-55,215,432.72-21,676,428.03

Finding the Fourth Proportional to 40,011,142.53, 55,215,432.72 and 21,676,428.03

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Solution

The fourth proportional to 40,011,142.53, 55,215,432.72 and 21,676,428.03 is: 29,913,501.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,142.53 : 55,215,432.72 = 21,676,428.03 : x
  2. Step 2: Convert to fraction form
    40,011,142.53/55,215,432.72 = 21,676,428.03/x
  3. Step 3: Cross multiply
    40,011,142.53x = 55,215,432.72 × 21,676,428.03
  4. Step 4: Simplify right side
    40,011,142.53x = 1,196,873,353,500,387.25
  5. Step 5: Solve for x
    x = 1,196,873,353,500,387.25/40,011,142.53
  6. Step 6: Final answer
    x = 29,913,501.04

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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.