Home / 85,012.20-127,434.60-47,590.20

Finding the Fourth Proportional to 85,012.20, 127,434.60 and 47,590.20

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Solution

The fourth proportional to 85,012.20, 127,434.60 and 47,590.20 is: 71,338.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,012.20 : 127,434.60 = 47,590.20 : x
  2. Step 2: Convert to fraction form
    85,012.20/127,434.60 = 47,590.20/x
  3. Step 3: Cross multiply
    85,012.20x = 127,434.60 × 47,590.20
  4. Step 4: Simplify right side
    85,012.20x = 6,064,638,100.92
  5. Step 5: Solve for x
    x = 6,064,638,100.92/85,012.20
  6. Step 6: Final answer
    x = 71,338.44

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1.5x scale

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.