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Finding the Fourth Proportional to 98,880.84, 148,339.98 and 39,721.14

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Solution

The fourth proportional to 98,880.84, 148,339.98 and 39,721.14 is: 59,589.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,880.84 : 148,339.98 = 39,721.14 : x
  2. Step 2: Convert to fraction form
    98,880.84/148,339.98 = 39,721.14/x
  3. Step 3: Cross multiply
    98,880.84x = 148,339.98 × 39,721.14
  4. Step 4: Simplify right side
    98,880.84x = 5,892,233,113.18
  5. Step 5: Solve for x
    x = 5,892,233,113.18/98,880.84
  6. Step 6: Final answer
    x = 59,589.23

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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.