Home / 78,918.26-108,904.43-47,070.68

Finding the Fourth Proportional to 78,918.26, 108,904.43 and 47,070.68

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Solution

The fourth proportional to 78,918.26, 108,904.43 and 47,070.68 is: 64,955.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918.26 : 108,904.43 = 47,070.68 : x
  2. Step 2: Convert to fraction form
    78,918.26/108,904.43 = 47,070.68/x
  3. Step 3: Cross multiply
    78,918.26x = 108,904.43 × 47,070.68
  4. Step 4: Simplify right side
    78,918.26x = 5,126,205,148.27
  5. Step 5: Solve for x
    x = 5,126,205,148.27/78,918.26
  6. Step 6: Final answer
    x = 64,955.89

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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.