Home / 85,682,383.66-128,527,708.92-28,173,381.58

Finding the Fourth Proportional to 85,682,383.66, 128,527,708.92 and 28,173,381.58

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Solution

The fourth proportional to 85,682,383.66, 128,527,708.92 and 28,173,381.58 is: 42,261,431.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682,383.66 : 128,527,708.92 = 28,173,381.58 : x
  2. Step 2: Convert to fraction form
    85,682,383.66/128,527,708.92 = 28,173,381.58/x
  3. Step 3: Cross multiply
    85,682,383.66x = 128,527,708.92 × 28,173,381.58
  4. Step 4: Simplify right side
    85,682,383.66x = 3,621,060,187,006,329.50
  5. Step 5: Solve for x
    x = 3,621,060,187,006,329.50/85,682,383.66
  6. Step 6: Final answer
    x = 42,261,431.49

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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.