Home / 78,307,542.28-108,064,352.10-43,503,488.20

Finding the Fourth Proportional to 78,307,542.28, 108,064,352.10 and 43,503,488.20

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Solution

The fourth proportional to 78,307,542.28, 108,064,352.10 and 43,503,488.20 is: 60,034,782.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,307,542.28 : 108,064,352.10 = 43,503,488.20 : x
  2. Step 2: Convert to fraction form
    78,307,542.28/108,064,352.10 = 43,503,488.20/x
  3. Step 3: Cross multiply
    78,307,542.28x = 108,064,352.10 × 43,503,488.20
  4. Step 4: Simplify right side
    78,307,542.28x = 4,701,176,266,422,995
  5. Step 5: Solve for x
    x = 4,701,176,266,422,995/78,307,542.28
  6. Step 6: Final answer
    x = 60,034,782.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.