Home / 85,505.24-117,996.78-47,779.16

Finding the Fourth Proportional to 85,505.24, 117,996.78 and 47,779.16

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Solution

The fourth proportional to 85,505.24, 117,996.78 and 47,779.16 is: 65,934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.24 : 117,996.78 = 47,779.16 : x
  2. Step 2: Convert to fraction form
    85,505.24/117,996.78 = 47,779.16/x
  3. Step 3: Cross multiply
    85,505.24x = 117,996.78 × 47,779.16
  4. Step 4: Simplify right side
    85,505.24x = 5,637,787,031.10
  5. Step 5: Solve for x
    x = 5,637,787,031.10/85,505.24
  6. Step 6: Final answer
    x = 65,934.99

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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.