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Finding the Fourth Proportional to 85,010.54, 127,340.73 and 49,865.45

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Solution

The fourth proportional to 85,010.54, 127,340.73 and 49,865.45 is: 74,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,010.54 : 127,340.73 = 49,865.45 : x
  2. Step 2: Convert to fraction form
    85,010.54/127,340.73 = 49,865.45/x
  3. Step 3: Cross multiply
    85,010.54x = 127,340.73 × 49,865.45
  4. Step 4: Simplify right side
    85,010.54x = 6,349,902,168.07
  5. Step 5: Solve for x
    x = 6,349,902,168.07/85,010.54
  6. Step 6: Final answer
    x = 74,695.47

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1.5x scale

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.