Home / 72,511,497.80-108,767,246.70-66,464,880.20

Finding the Fourth Proportional to 72,511,497.80, 108,767,246.70 and 66,464,880.20

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Solution

The fourth proportional to 72,511,497.80, 108,767,246.70 and 66,464,880.20 is: 99,697,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511,497.80 : 108,767,246.70 = 66,464,880.20 : x
  2. Step 2: Convert to fraction form
    72,511,497.80/108,767,246.70 = 66,464,880.20/x
  3. Step 3: Cross multiply
    72,511,497.80x = 108,767,246.70 × 66,464,880.20
  4. Step 4: Simplify right side
    72,511,497.80x = 7,229,202,021,599,346
  5. Step 5: Solve for x
    x = 7,229,202,021,599,346/72,511,497.80
  6. Step 6: Final answer
    x = 99,697,320.30

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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.