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Finding the Fourth Proportional to 66,245.79, 99,139.05 and 63,490.17

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Solution

The fourth proportional to 66,245.79, 99,139.05 and 63,490.17 is: 95,015.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.79 : 99,139.05 = 63,490.17 : x
  2. Step 2: Convert to fraction form
    66,245.79/99,139.05 = 63,490.17/x
  3. Step 3: Cross multiply
    66,245.79x = 99,139.05 × 63,490.17
  4. Step 4: Simplify right side
    66,245.79x = 6,294,355,138.14
  5. Step 5: Solve for x
    x = 6,294,355,138.14/66,245.79
  6. Step 6: Final answer
    x = 95,015.17

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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.