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Finding the Fourth Proportional to 65,880.75, 90,915.47 and 35,666.07

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Solution

The fourth proportional to 65,880.75, 90,915.47 and 35,666.07 is: 49,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,880.75 : 90,915.47 = 35,666.07 : x
  2. Step 2: Convert to fraction form
    65,880.75/90,915.47 = 35,666.07/x
  3. Step 3: Cross multiply
    65,880.75x = 90,915.47 × 35,666.07
  4. Step 4: Simplify right side
    65,880.75x = 3,242,597,517.10
  5. Step 5: Solve for x
    x = 3,242,597,517.10/65,880.75
  6. Step 6: Final answer
    x = 49,219.20

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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.