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Finding the Fourth Proportional to 98,369.79, 147,562.79 and 31,820.60

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Solution

The fourth proportional to 98,369.79, 147,562.79 and 31,820.60 is: 47,733.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,369.79 : 147,562.79 = 31,820.60 : x
  2. Step 2: Convert to fraction form
    98,369.79/147,562.79 = 31,820.60/x
  3. Step 3: Cross multiply
    98,369.79x = 147,562.79 × 31,820.60
  4. Step 4: Simplify right side
    98,369.79x = 4,695,535,618.56
  5. Step 5: Solve for x
    x = 4,695,535,618.56/98,369.79
  6. Step 6: Final answer
    x = 47,733.51

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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.