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Finding the Fourth Proportional to 66,207.70, 99,311.55 and 65,746.90

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Solution

The fourth proportional to 66,207.70, 99,311.55 and 65,746.90 is: 98,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.70 : 99,311.55 = 65,746.90 : x
  2. Step 2: Convert to fraction form
    66,207.70/99,311.55 = 65,746.90/x
  3. Step 3: Cross multiply
    66,207.70x = 99,311.55 × 65,746.90
  4. Step 4: Simplify right side
    66,207.70x = 6,529,426,546.70
  5. Step 5: Solve for x
    x = 6,529,426,546.70/66,207.70
  6. Step 6: Final answer
    x = 98,620.35

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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.