Home / 78,865.50-118,239.93-47,693.82

Finding the Fourth Proportional to 78,865.50, 118,239.93 and 47,693.82

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Solution

The fourth proportional to 78,865.50, 118,239.93 and 47,693.82 is: 71,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865.50 : 118,239.93 = 47,693.82 : x
  2. Step 2: Convert to fraction form
    78,865.50/118,239.93 = 47,693.82/x
  3. Step 3: Cross multiply
    78,865.50x = 118,239.93 × 47,693.82
  4. Step 4: Simplify right side
    78,865.50x = 5,639,313,938.23
  5. Step 5: Solve for x
    x = 5,639,313,938.23/78,865.50
  6. Step 6: Final answer
    x = 71,505.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.