Home / 78,424,151.40-117,528,609.12-49,618,720.80

Finding the Fourth Proportional to 78,424,151.40, 117,528,609.12 and 49,618,720.80

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Solution

The fourth proportional to 78,424,151.40, 117,528,609.12 and 49,618,720.80 is: 74,359,991.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,424,151.40 : 117,528,609.12 = 49,618,720.80 : x
  2. Step 2: Convert to fraction form
    78,424,151.40/117,528,609.12 = 49,618,720.80/x
  3. Step 3: Cross multiply
    78,424,151.40x = 117,528,609.12 × 49,618,720.80
  4. Step 4: Simplify right side
    78,424,151.40x = 5,831,619,241,937,614
  5. Step 5: Solve for x
    x = 5,831,619,241,937,614/78,424,151.40
  6. Step 6: Final answer
    x = 74,359,991.63

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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.