Home / 40,011,136.21-55,215,424-21,676,421.71

Finding the Fourth Proportional to 40,011,136.21, 55,215,424 and 21,676,421.71

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Solution

The fourth proportional to 40,011,136.21, 55,215,424 and 21,676,421.71 is: 29,913,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,136.21 : 55,215,424 = 21,676,421.71 : x
  2. Step 2: Convert to fraction form
    40,011,136.21/55,215,424 = 21,676,421.71/x
  3. Step 3: Cross multiply
    40,011,136.21x = 55,215,424 × 21,676,421.71
  4. Step 4: Simplify right side
    40,011,136.21x = 1,196,872,815,520,455
  5. Step 5: Solve for x
    x = 1,196,872,815,520,455/40,011,136.21
  6. Step 6: Final answer
    x = 29,913,492.31

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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.