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Finding the Fourth Proportional to 85,907.80, 118,666.32 and 71,614.32

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Solution

The fourth proportional to 85,907.80, 118,666.32 and 71,614.32 is: 98,922.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,907.80 : 118,666.32 = 71,614.32 : x
  2. Step 2: Convert to fraction form
    85,907.80/118,666.32 = 71,614.32/x
  3. Step 3: Cross multiply
    85,907.80x = 118,666.32 × 71,614.32
  4. Step 4: Simplify right side
    85,907.80x = 8,498,207,813.70
  5. Step 5: Solve for x
    x = 8,498,207,813.70/85,907.80
  6. Step 6: Final answer
    x = 98,922.42

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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.