Home / 79,181,919.20-118,772,878.80-66,427,335.20

Finding the Fourth Proportional to 79,181,919.20, 118,772,878.80 and 66,427,335.20

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Solution

The fourth proportional to 79,181,919.20, 118,772,878.80 and 66,427,335.20 is: 99,641,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,181,919.20 : 118,772,878.80 = 66,427,335.20 : x
  2. Step 2: Convert to fraction form
    79,181,919.20/118,772,878.80 = 66,427,335.20/x
  3. Step 3: Cross multiply
    79,181,919.20x = 118,772,878.80 × 66,427,335.20
  4. Step 4: Simplify right side
    79,181,919.20x = 7,889,765,832,716,574
  5. Step 5: Solve for x
    x = 7,889,765,832,716,574/79,181,919.20
  6. Step 6: Final answer
    x = 99,641,002.80

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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.