Home / 85,290.21-127,931.67-29,135.34

Finding the Fourth Proportional to 85,290.21, 127,931.67 and 29,135.34

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Solution

The fourth proportional to 85,290.21, 127,931.67 and 29,135.34 is: 43,701.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,290.21 : 127,931.67 = 29,135.34 : x
  2. Step 2: Convert to fraction form
    85,290.21/127,931.67 = 29,135.34/x
  3. Step 3: Cross multiply
    85,290.21x = 127,931.67 × 29,135.34
  4. Step 4: Simplify right side
    85,290.21x = 3,727,332,702.22
  5. Step 5: Solve for x
    x = 3,727,332,702.22/85,290.21
  6. Step 6: Final answer
    x = 43,701.76

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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.