Home / 85,442.81-117,874.91-57,157.61

Finding the Fourth Proportional to 85,442.81, 117,874.91 and 57,157.61

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Solution

The fourth proportional to 85,442.81, 117,874.91 and 57,157.61 is: 78,853.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,442.81 : 117,874.91 = 57,157.61 : x
  2. Step 2: Convert to fraction form
    85,442.81/117,874.91 = 57,157.61/x
  3. Step 3: Cross multiply
    85,442.81x = 117,874.91 × 57,157.61
  4. Step 4: Simplify right side
    85,442.81x = 6,737,447,688.08
  5. Step 5: Solve for x
    x = 6,737,447,688.08/85,442.81
  6. Step 6: Final answer
    x = 78,853.31

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1.5x scale

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.