Home / 78,424,163.40-117,528,627.12-49,618,732.80

Finding the Fourth Proportional to 78,424,163.40, 117,528,627.12 and 49,618,732.80

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Solution

The fourth proportional to 78,424,163.40, 117,528,627.12 and 49,618,732.80 is: 74,360,009.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,424,163.40 : 117,528,627.12 = 49,618,732.80 : x
  2. Step 2: Convert to fraction form
    78,424,163.40/117,528,627.12 = 49,618,732.80/x
  3. Step 3: Cross multiply
    78,424,163.40x = 117,528,627.12 × 49,618,732.80
  4. Step 4: Simplify right side
    78,424,163.40x = 5,831,621,545,418,113
  5. Step 5: Solve for x
    x = 5,831,621,545,418,113/78,424,163.40
  6. Step 6: Final answer
    x = 74,360,009.63

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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.