Home / 85,319.15-117,718.83-51,316.70

Finding the Fourth Proportional to 85,319.15, 117,718.83 and 51,316.70

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Solution

The fourth proportional to 85,319.15, 117,718.83 and 51,316.70 is: 70,804.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,319.15 : 117,718.83 = 51,316.70 : x
  2. Step 2: Convert to fraction form
    85,319.15/117,718.83 = 51,316.70/x
  3. Step 3: Cross multiply
    85,319.15x = 117,718.83 × 51,316.70
  4. Step 4: Simplify right side
    85,319.15x = 6,040,941,294.87
  5. Step 5: Solve for x
    x = 6,040,941,294.87/85,319.15
  6. Step 6: Final answer
    x = 70,804.05

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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.