Home / 79,185,899.70-118,778,849.55-66,431,315.70

Finding the Fourth Proportional to 79,185,899.70, 118,778,849.55 and 66,431,315.70

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Solution

The fourth proportional to 79,185,899.70, 118,778,849.55 and 66,431,315.70 is: 99,646,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,185,899.70 : 118,778,849.55 = 66,431,315.70 : x
  2. Step 2: Convert to fraction form
    79,185,899.70/118,778,849.55 = 66,431,315.70/x
  3. Step 3: Cross multiply
    79,185,899.70x = 118,778,849.55 × 66,431,315.70
  4. Step 4: Simplify right side
    79,185,899.70x = 7,890,635,252,938,853
  5. Step 5: Solve for x
    x = 7,890,635,252,938,853/79,185,899.70
  6. Step 6: Final answer
    x = 99,646,973.55

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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.