Home / 78,955.18-108,953.56-43,145.49

Finding the Fourth Proportional to 78,955.18, 108,953.56 and 43,145.49

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Solution

The fourth proportional to 78,955.18, 108,953.56 and 43,145.49 is: 59,538.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,955.18 : 108,953.56 = 43,145.49 : x
  2. Step 2: Convert to fraction form
    78,955.18/108,953.56 = 43,145.49/x
  3. Step 3: Cross multiply
    78,955.18x = 108,953.56 × 43,145.49
  4. Step 4: Simplify right side
    78,955.18x = 4,700,854,733.44
  5. Step 5: Solve for x
    x = 4,700,854,733.44/78,955.18
  6. Step 6: Final answer
    x = 59,538.27

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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.