Home / 77,280.38-115,842.14-43,931.53

Finding the Fourth Proportional to 77,280.38, 115,842.14 and 43,931.53

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Solution

The fourth proportional to 77,280.38, 115,842.14 and 43,931.53 is: 65,852.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280.38 : 115,842.14 = 43,931.53 : x
  2. Step 2: Convert to fraction form
    77,280.38/115,842.14 = 43,931.53/x
  3. Step 3: Cross multiply
    77,280.38x = 115,842.14 × 43,931.53
  4. Step 4: Simplify right side
    77,280.38x = 5,089,122,999.14
  5. Step 5: Solve for x
    x = 5,089,122,999.14/77,280.38
  6. Step 6: Final answer
    x = 65,852.72

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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.