Home / 83,731.70-115,543.05-47,913.50

Finding the Fourth Proportional to 83,731.70, 115,543.05 and 47,913.50

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Solution

The fourth proportional to 83,731.70, 115,543.05 and 47,913.50 is: 66,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,731.70 : 115,543.05 = 47,913.50 : x
  2. Step 2: Convert to fraction form
    83,731.70/115,543.05 = 47,913.50/x
  3. Step 3: Cross multiply
    83,731.70x = 115,543.05 × 47,913.50
  4. Step 4: Simplify right side
    83,731.70x = 5,536,072,035.36
  5. Step 5: Solve for x
    x = 5,536,072,035.36/83,731.70
  6. Step 6: Final answer
    x = 66,116.80

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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.