Home / 79,185,645.20-118,778,467.80-66,431,061.20

Finding the Fourth Proportional to 79,185,645.20, 118,778,467.80 and 66,431,061.20

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Solution

The fourth proportional to 79,185,645.20, 118,778,467.80 and 66,431,061.20 is: 99,646,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,185,645.20 : 118,778,467.80 = 66,431,061.20 : x
  2. Step 2: Convert to fraction form
    79,185,645.20/118,778,467.80 = 66,431,061.20/x
  3. Step 3: Cross multiply
    79,185,645.20x = 118,778,467.80 × 66,431,061.20
  4. Step 4: Simplify right side
    79,185,645.20x = 7,890,579,663,664,030
  5. Step 5: Solve for x
    x = 7,890,579,663,664,030/79,185,645.20
  6. Step 6: Final answer
    x = 99,646,591.80

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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.