Home / 78,926.82-108,901.08-47,089.50

Finding the Fourth Proportional to 78,926.82, 108,901.08 and 47,089.50

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Solution

The fourth proportional to 78,926.82, 108,901.08 and 47,089.50 is: 64,972.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,926.82 : 108,901.08 = 47,089.50 : x
  2. Step 2: Convert to fraction form
    78,926.82/108,901.08 = 47,089.50/x
  3. Step 3: Cross multiply
    78,926.82x = 108,901.08 × 47,089.50
  4. Step 4: Simplify right side
    78,926.82x = 5,128,097,406.66
  5. Step 5: Solve for x
    x = 5,128,097,406.66/78,926.82
  6. Step 6: Final answer
    x = 64,972.81

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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.