Home / 77,661,881.45-107,175,674.10-42,381,964.48

Finding the Fourth Proportional to 77,661,881.45, 107,175,674.10 and 42,381,964.48

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Solution

The fourth proportional to 77,661,881.45, 107,175,674.10 and 42,381,964.48 is: 58,488,353.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,661,881.45 : 107,175,674.10 = 42,381,964.48 : x
  2. Step 2: Convert to fraction form
    77,661,881.45/107,175,674.10 = 42,381,964.48/x
  3. Step 3: Cross multiply
    77,661,881.45x = 107,175,674.10 × 42,381,964.48
  4. Step 4: Simplify right side
    77,661,881.45x = 4,542,315,612,558,316
  5. Step 5: Solve for x
    x = 4,542,315,612,558,316/77,661,881.45
  6. Step 6: Final answer
    x = 58,488,353.97

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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.