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Finding the Fourth Proportional to 98,599.40, 147,680.40 and 39,404.60

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Solution

The fourth proportional to 98,599.40, 147,680.40 and 39,404.60 is: 59,019.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,599.40 : 147,680.40 = 39,404.60 : x
  2. Step 2: Convert to fraction form
    98,599.40/147,680.40 = 39,404.60/x
  3. Step 3: Cross multiply
    98,599.40x = 147,680.40 × 39,404.60
  4. Step 4: Simplify right side
    98,599.40x = 5,819,287,089.84
  5. Step 5: Solve for x
    x = 5,819,287,089.84/98,599.40
  6. Step 6: Final answer
    x = 59,019.50

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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.