Home / 78,975.12-108,985.47-43,165.38

Finding the Fourth Proportional to 78,975.12, 108,985.47 and 43,165.38

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Solution

The fourth proportional to 78,975.12, 108,985.47 and 43,165.38 is: 59,568.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,975.12 : 108,985.47 = 43,165.38 : x
  2. Step 2: Convert to fraction form
    78,975.12/108,985.47 = 43,165.38/x
  3. Step 3: Cross multiply
    78,975.12x = 108,985.47 × 43,165.38
  4. Step 4: Simplify right side
    78,975.12x = 4,704,399,227.03
  5. Step 5: Solve for x
    x = 4,704,399,227.03/78,975.12
  6. Step 6: Final answer
    x = 59,568.12

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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.