Home / 85,514.59-117,996.91-47,781.55

Finding the Fourth Proportional to 85,514.59, 117,996.91 and 47,781.55

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Solution

The fourth proportional to 85,514.59, 117,996.91 and 47,781.55 is: 65,931.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,514.59 : 117,996.91 = 47,781.55 : x
  2. Step 2: Convert to fraction form
    85,514.59/117,996.91 = 47,781.55/x
  3. Step 3: Cross multiply
    85,514.59x = 117,996.91 × 47,781.55
  4. Step 4: Simplify right side
    85,514.59x = 5,638,075,255.01
  5. Step 5: Solve for x
    x = 5,638,075,255.01/85,514.59
  6. Step 6: Final answer
    x = 65,931.15

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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.