Home / 85,483.11-128,219.79-23,148.75

Finding the Fourth Proportional to 85,483.11, 128,219.79 and 23,148.75

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Solution

The fourth proportional to 85,483.11, 128,219.79 and 23,148.75 is: 34,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,483.11 : 128,219.79 = 23,148.75 : x
  2. Step 2: Convert to fraction form
    85,483.11/128,219.79 = 23,148.75/x
  3. Step 3: Cross multiply
    85,483.11x = 128,219.79 × 23,148.75
  4. Step 4: Simplify right side
    85,483.11x = 2,968,127,863.76
  5. Step 5: Solve for x
    x = 2,968,127,863.76/85,483.11
  6. Step 6: Final answer
    x = 34,721.80

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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.