Home / 77,985,923.40-107,623,936.80-43,178,612.76

Finding the Fourth Proportional to 77,985,923.40, 107,623,936.80 and 43,178,612.76

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Solution

The fourth proportional to 77,985,923.40, 107,623,936.80 and 43,178,612.76 is: 59,588,347.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,985,923.40 : 107,623,936.80 = 43,178,612.76 : x
  2. Step 2: Convert to fraction form
    77,985,923.40/107,623,936.80 = 43,178,612.76/x
  3. Step 3: Cross multiply
    77,985,923.40x = 107,623,936.80 × 43,178,612.76
  4. Step 4: Simplify right side
    77,985,923.40x = 4,647,052,290,793,913
  5. Step 5: Solve for x
    x = 4,647,052,290,793,913/77,985,923.40
  6. Step 6: Final answer
    x = 59,588,347.33

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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.