Home / 76,115.06-105,036.20-42,125

Finding the Fourth Proportional to 76,115.06, 105,036.20 and 42,125

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Solution

The fourth proportional to 76,115.06, 105,036.20 and 42,125 is: 58,131.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,115.06 : 105,036.20 = 42,125 : x
  2. Step 2: Convert to fraction form
    76,115.06/105,036.20 = 42,125/x
  3. Step 3: Cross multiply
    76,115.06x = 105,036.20 × 42,125
  4. Step 4: Simplify right side
    76,115.06x = 4,424,649,925
  5. Step 5: Solve for x
    x = 4,424,649,925/76,115.06
  6. Step 6: Final answer
    x = 58,131.07

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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.