Home / 66,428,739.20-99,643,108.80-52,991,811.20

Finding the Fourth Proportional to 66,428,739.20, 99,643,108.80 and 52,991,811.20

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Solution

The fourth proportional to 66,428,739.20, 99,643,108.80 and 52,991,811.20 is: 79,487,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,739.20 : 99,643,108.80 = 52,991,811.20 : x
  2. Step 2: Convert to fraction form
    66,428,739.20/99,643,108.80 = 52,991,811.20/x
  3. Step 3: Cross multiply
    66,428,739.20x = 99,643,108.80 × 52,991,811.20
  4. Step 4: Simplify right side
    66,428,739.20x = 5,280,268,808,910,659
  5. Step 5: Solve for x
    x = 5,280,268,808,910,659/66,428,739.20
  6. Step 6: Final answer
    x = 79,487,716.80

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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.