Home / 78,970.09-108,975.45-43,161.34

Finding the Fourth Proportional to 78,970.09, 108,975.45 and 43,161.34

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Solution

The fourth proportional to 78,970.09, 108,975.45 and 43,161.34 is: 59,560.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,970.09 : 108,975.45 = 43,161.34 : x
  2. Step 2: Convert to fraction form
    78,970.09/108,975.45 = 43,161.34/x
  3. Step 3: Cross multiply
    78,970.09x = 108,975.45 × 43,161.34
  4. Step 4: Simplify right side
    78,970.09x = 4,703,526,449.10
  5. Step 5: Solve for x
    x = 4,703,526,449.10/78,970.09
  6. Step 6: Final answer
    x = 59,560.86

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1.5x scale

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.