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Finding the Fourth Proportional to 84,912.16, 127,174 and 40,570.08

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Solution

The fourth proportional to 84,912.16, 127,174 and 40,570.08 is: 60,762.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912.16 : 127,174 = 40,570.08 : x
  2. Step 2: Convert to fraction form
    84,912.16/127,174 = 40,570.08/x
  3. Step 3: Cross multiply
    84,912.16x = 127,174 × 40,570.08
  4. Step 4: Simplify right side
    84,912.16x = 5,159,459,353.92
  5. Step 5: Solve for x
    x = 5,159,459,353.92/84,912.16
  6. Step 6: Final answer
    x = 60,762.31

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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.