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Finding the Fourth Proportional to 91,659,690.40, 126,487,850.40 and 50,406,582.88

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Solution

The fourth proportional to 91,659,690.40, 126,487,850.40 and 50,406,582.88 is: 69,559,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,659,690.40 : 126,487,850.40 = 50,406,582.88 : x
  2. Step 2: Convert to fraction form
    91,659,690.40/126,487,850.40 = 50,406,582.88/x
  3. Step 3: Cross multiply
    91,659,690.40x = 126,487,850.40 × 50,406,582.88
  4. Step 4: Simplify right side
    91,659,690.40x = 6,375,820,314,500,642
  5. Step 5: Solve for x
    x = 6,375,820,314,500,642/91,659,690.40
  6. Step 6: Final answer
    x = 69,559,697.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.