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Finding the Fourth Proportional to 74,681,764.43, 111,958,751.01 and 28,656,662.30

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Solution

The fourth proportional to 74,681,764.43, 111,958,751.01 and 28,656,662.30 is: 42,960,475.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,681,764.43 : 111,958,751.01 = 28,656,662.30 : x
  2. Step 2: Convert to fraction form
    74,681,764.43/111,958,751.01 = 28,656,662.30/x
  3. Step 3: Cross multiply
    74,681,764.43x = 111,958,751.01 × 28,656,662.30
  4. Step 4: Simplify right side
    74,681,764.43x = 3,208,364,118,771,023
  5. Step 5: Solve for x
    x = 3,208,364,118,771,023/74,681,764.43
  6. Step 6: Final answer
    x = 42,960,475.60

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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.