Home / 78,424,148.40-117,528,604.62-49,618,717.80

Finding the Fourth Proportional to 78,424,148.40, 117,528,604.62 and 49,618,717.80

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Solution

The fourth proportional to 78,424,148.40, 117,528,604.62 and 49,618,717.80 is: 74,359,987.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,424,148.40 : 117,528,604.62 = 49,618,717.80 : x
  2. Step 2: Convert to fraction form
    78,424,148.40/117,528,604.62 = 49,618,717.80/x
  3. Step 3: Cross multiply
    78,424,148.40x = 117,528,604.62 × 49,618,717.80
  4. Step 4: Simplify right side
    78,424,148.40x = 5,831,618,666,067,556
  5. Step 5: Solve for x
    x = 5,831,618,666,067,556/78,424,148.40
  6. Step 6: Final answer
    x = 74,359,987.13

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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.