Home / 76,851.50-106,142.55-51,657.26

Finding the Fourth Proportional to 76,851.50, 106,142.55 and 51,657.26

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Solution

The fourth proportional to 76,851.50, 106,142.55 and 51,657.26 is: 71,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,851.50 : 106,142.55 = 51,657.26 : x
  2. Step 2: Convert to fraction form
    76,851.50/106,142.55 = 51,657.26/x
  3. Step 3: Cross multiply
    76,851.50x = 106,142.55 × 51,657.26
  4. Step 4: Simplify right side
    76,851.50x = 5,483,033,302.41
  5. Step 5: Solve for x
    x = 5,483,033,302.41/76,851.50
  6. Step 6: Final answer
    x = 71,345.82

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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.