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Finding the Fourth Proportional to 107,798,679.80, 161,698,019.70 and 43,112,468.60

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Solution

The fourth proportional to 107,798,679.80, 161,698,019.70 and 43,112,468.60 is: 64,668,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,798,679.80 : 161,698,019.70 = 43,112,468.60 : x
  2. Step 2: Convert to fraction form
    107,798,679.80/161,698,019.70 = 43,112,468.60/x
  3. Step 3: Cross multiply
    107,798,679.80x = 161,698,019.70 × 43,112,468.60
  4. Step 4: Simplify right side
    107,798,679.80x = 6,971,200,796,998,431
  5. Step 5: Solve for x
    x = 6,971,200,796,998,431/107,798,679.80
  6. Step 6: Final answer
    x = 64,668,702.90

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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.