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Finding the Fourth Proportional to 98,445.30, 147,777.30 and 61,047.60

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Solution

The fourth proportional to 98,445.30, 147,777.30 and 61,047.60 is: 91,639.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,445.30 : 147,777.30 = 61,047.60 : x
  2. Step 2: Convert to fraction form
    98,445.30/147,777.30 = 61,047.60/x
  3. Step 3: Cross multiply
    98,445.30x = 147,777.30 × 61,047.60
  4. Step 4: Simplify right side
    98,445.30x = 9,021,449,499.48
  5. Step 5: Solve for x
    x = 9,021,449,499.48/98,445.30
  6. Step 6: Final answer
    x = 91,639.21

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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.