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Finding the Fourth Proportional to 66,434,591.80, 99,651,887.70 and 55,664,054.20

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Solution

The fourth proportional to 66,434,591.80, 99,651,887.70 and 55,664,054.20 is: 83,496,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,434,591.80 : 99,651,887.70 = 55,664,054.20 : x
  2. Step 2: Convert to fraction form
    66,434,591.80/99,651,887.70 = 55,664,054.20/x
  3. Step 3: Cross multiply
    66,434,591.80x = 99,651,887.70 × 55,664,054.20
  4. Step 4: Simplify right side
    66,434,591.80x = 5,547,028,078,065,114
  5. Step 5: Solve for x
    x = 5,547,028,078,065,114/66,434,591.80
  6. Step 6: Final answer
    x = 83,496,081.30

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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.