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Finding the Fourth Proportional to 65,735.60, 90,715.05 and 35,520.93

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Solution

The fourth proportional to 65,735.60, 90,715.05 and 35,520.93 is: 49,018.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,735.60 : 90,715.05 = 35,520.93 : x
  2. Step 2: Convert to fraction form
    65,735.60/90,715.05 = 35,520.93/x
  3. Step 3: Cross multiply
    65,735.60x = 90,715.05 × 35,520.93
  4. Step 4: Simplify right side
    65,735.60x = 3,222,282,941.00
  5. Step 5: Solve for x
    x = 3,222,282,941.00/65,735.60
  6. Step 6: Final answer
    x = 49,018.84

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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.