Home / 85,682,384.41-128,527,710.05-28,173,382.33

Finding the Fourth Proportional to 85,682,384.41, 128,527,710.05 and 28,173,382.33

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Solution

The fourth proportional to 85,682,384.41, 128,527,710.05 and 28,173,382.33 is: 42,261,432.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682,384.41 : 128,527,710.05 = 28,173,382.33 : x
  2. Step 2: Convert to fraction form
    85,682,384.41/128,527,710.05 = 28,173,382.33/x
  3. Step 3: Cross multiply
    85,682,384.41x = 128,527,710.05 × 28,173,382.33
  4. Step 4: Simplify right side
    85,682,384.41x = 3,621,060,315,238,033
  5. Step 5: Solve for x
    x = 3,621,060,315,238,033/85,682,384.41
  6. Step 6: Final answer
    x = 42,261,432.62

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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.