Home / 85,702.10-128,601.75-46,258.34

Finding the Fourth Proportional to 85,702.10, 128,601.75 and 46,258.34

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Solution

The fourth proportional to 85,702.10, 128,601.75 and 46,258.34 is: 69,413.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,702.10 : 128,601.75 = 46,258.34 : x
  2. Step 2: Convert to fraction form
    85,702.10/128,601.75 = 46,258.34/x
  3. Step 3: Cross multiply
    85,702.10x = 128,601.75 × 46,258.34
  4. Step 4: Simplify right side
    85,702.10x = 5,948,902,833.09
  5. Step 5: Solve for x
    x = 5,948,902,833.09/85,702.10
  6. Step 6: Final answer
    x = 69,413.74

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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.