Home / 85,330.14-127,899.81-31,970.77

Finding the Fourth Proportional to 85,330.14, 127,899.81 and 31,970.77

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Solution

The fourth proportional to 85,330.14, 127,899.81 and 31,970.77 is: 47,920.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,330.14 : 127,899.81 = 31,970.77 : x
  2. Step 2: Convert to fraction form
    85,330.14/127,899.81 = 31,970.77/x
  3. Step 3: Cross multiply
    85,330.14x = 127,899.81 × 31,970.77
  4. Step 4: Simplify right side
    85,330.14x = 4,089,055,408.55
  5. Step 5: Solve for x
    x = 4,089,055,408.55/85,330.14
  6. Step 6: Final answer
    x = 47,920.41

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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.