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Finding the Fourth Proportional to 65,099.97, 89,838.54 and 36,420.21

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Solution

The fourth proportional to 65,099.97, 89,838.54 and 36,420.21 is: 50,260.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,099.97 : 89,838.54 = 36,420.21 : x
  2. Step 2: Convert to fraction form
    65,099.97/89,838.54 = 36,420.21/x
  3. Step 3: Cross multiply
    65,099.97x = 89,838.54 × 36,420.21
  4. Step 4: Simplify right side
    65,099.97x = 3,271,938,492.89
  5. Step 5: Solve for x
    x = 3,271,938,492.89/65,099.97
  6. Step 6: Final answer
    x = 50,260.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.