Home / 78,479,643.72-108,301,048.86-43,196,694.42

Finding the Fourth Proportional to 78,479,643.72, 108,301,048.86 and 43,196,694.42

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Solution

The fourth proportional to 78,479,643.72, 108,301,048.86 and 43,196,694.42 is: 59,610,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,479,643.72 : 108,301,048.86 = 43,196,694.42 : x
  2. Step 2: Convert to fraction form
    78,479,643.72/108,301,048.86 = 43,196,694.42/x
  3. Step 3: Cross multiply
    78,479,643.72x = 108,301,048.86 × 43,196,694.42
  4. Step 4: Simplify right side
    78,479,643.72x = 4,678,247,312,970,910
  5. Step 5: Solve for x
    x = 4,678,247,312,970,910/78,479,643.72
  6. Step 6: Final answer
    x = 59,610,965.23

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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.