Home / 78,513,005.82-108,342,728.10-43,704,801.30

Finding the Fourth Proportional to 78,513,005.82, 108,342,728.10 and 43,704,801.30

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Solution

The fourth proportional to 78,513,005.82, 108,342,728.10 and 43,704,801.30 is: 60,309,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,513,005.82 : 108,342,728.10 = 43,704,801.30 : x
  2. Step 2: Convert to fraction form
    78,513,005.82/108,342,728.10 = 43,704,801.30/x
  3. Step 3: Cross multiply
    78,513,005.82x = 108,342,728.10 × 43,704,801.30
  4. Step 4: Simplify right side
    78,513,005.82x = 4,735,097,403,910,426
  5. Step 5: Solve for x
    x = 4,735,097,403,910,426/78,513,005.82
  6. Step 6: Final answer
    x = 60,309,720.08

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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.