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Finding the Fourth Proportional to 66,411.60, 99,617.40 and 34,809.45

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Solution

The fourth proportional to 66,411.60, 99,617.40 and 34,809.45 is: 52,214.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,411.60 : 99,617.40 = 34,809.45 : x
  2. Step 2: Convert to fraction form
    66,411.60/99,617.40 = 34,809.45/x
  3. Step 3: Cross multiply
    66,411.60x = 99,617.40 × 34,809.45
  4. Step 4: Simplify right side
    66,411.60x = 3,467,626,904.43
  5. Step 5: Solve for x
    x = 3,467,626,904.43/66,411.60
  6. Step 6: Final answer
    x = 52,214.18

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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.