Home / 85,078.89-127,618.65-34,478.82

Finding the Fourth Proportional to 85,078.89, 127,618.65 and 34,478.82

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Solution

The fourth proportional to 85,078.89, 127,618.65 and 34,478.82 is: 51,718.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.89 : 127,618.65 = 34,478.82 : x
  2. Step 2: Convert to fraction form
    85,078.89/127,618.65 = 34,478.82/x
  3. Step 3: Cross multiply
    85,078.89x = 127,618.65 × 34,478.82
  4. Step 4: Simplify right side
    85,078.89x = 4,400,140,461.99
  5. Step 5: Solve for x
    x = 4,400,140,461.99/85,078.89
  6. Step 6: Final answer
    x = 51,718.36

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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.