Home / 31,136,966.79-42,969,012.51-16,815,388.74

Finding the Fourth Proportional to 31,136,966.79, 42,969,012.51 and 16,815,388.74

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Solution

The fourth proportional to 31,136,966.79, 42,969,012.51 and 16,815,388.74 is: 23,205,235.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,136,966.79 : 42,969,012.51 = 16,815,388.74 : x
  2. Step 2: Convert to fraction form
    31,136,966.79/42,969,012.51 = 16,815,388.74/x
  3. Step 3: Cross multiply
    31,136,966.79x = 42,969,012.51 × 16,815,388.74
  4. Step 4: Simplify right side
    31,136,966.79x = 722,540,649,129,573
  5. Step 5: Solve for x
    x = 722,540,649,129,573/31,136,966.79
  6. Step 6: Final answer
    x = 23,205,235.56

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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.