Home / 30,344,854.20-45,517,281.30-21,097,780.80

Finding the Fourth Proportional to 30,344,854.20, 45,517,281.30 and 21,097,780.80

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Solution

The fourth proportional to 30,344,854.20, 45,517,281.30 and 21,097,780.80 is: 31,646,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,344,854.20 : 45,517,281.30 = 21,097,780.80 : x
  2. Step 2: Convert to fraction form
    30,344,854.20/45,517,281.30 = 21,097,780.80/x
  3. Step 3: Cross multiply
    30,344,854.20x = 45,517,281.30 × 21,097,780.80
  4. Step 4: Simplify right side
    30,344,854.20x = 960,313,623,479,339
  5. Step 5: Solve for x
    x = 960,313,623,479,339/30,344,854.20
  6. Step 6: Final answer
    x = 31,646,671.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.