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Finding the Fourth Proportional to 98,320.62, 147,529.92 and 45,012.51

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Solution

The fourth proportional to 98,320.62, 147,529.92 and 45,012.51 is: 67,541.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,320.62 : 147,529.92 = 45,012.51 : x
  2. Step 2: Convert to fraction form
    98,320.62/147,529.92 = 45,012.51/x
  3. Step 3: Cross multiply
    98,320.62x = 147,529.92 × 45,012.51
  4. Step 4: Simplify right side
    98,320.62x = 6,640,691,999.30
  5. Step 5: Solve for x
    x = 6,640,691,999.30/98,320.62
  6. Step 6: Final answer
    x = 67,541.19

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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.