Home / 85,577.25-118,217.40-77,907.71

Finding the Fourth Proportional to 85,577.25, 118,217.40 and 77,907.71

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Solution

The fourth proportional to 85,577.25, 118,217.40 and 77,907.71 is: 107,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,577.25 : 118,217.40 = 77,907.71 : x
  2. Step 2: Convert to fraction form
    85,577.25/118,217.40 = 77,907.71/x
  3. Step 3: Cross multiply
    85,577.25x = 118,217.40 × 77,907.71
  4. Step 4: Simplify right side
    85,577.25x = 9,210,046,916.15
  5. Step 5: Solve for x
    x = 9,210,046,916.15/85,577.25
  6. Step 6: Final answer
    x = 107,622.61

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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.