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Finding the Fourth Proportional to 67,485.12, 101,289.12 and 35,921.70

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Solution

The fourth proportional to 67,485.12, 101,289.12 and 35,921.70 is: 53,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,485.12 : 101,289.12 = 35,921.70 : x
  2. Step 2: Convert to fraction form
    67,485.12/101,289.12 = 35,921.70/x
  3. Step 3: Cross multiply
    67,485.12x = 101,289.12 × 35,921.70
  4. Step 4: Simplify right side
    67,485.12x = 3,638,477,381.90
  5. Step 5: Solve for x
    x = 3,638,477,381.90/67,485.12
  6. Step 6: Final answer
    x = 53,915.25

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1.5x scale

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.