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Finding the Fourth Proportional to 85,505.08, 117,996.72 and 47,779.33

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Solution

The fourth proportional to 85,505.08, 117,996.72 and 47,779.33 is: 65,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.08 : 117,996.72 = 47,779.33 : x
  2. Step 2: Convert to fraction form
    85,505.08/117,996.72 = 47,779.33/x
  3. Step 3: Cross multiply
    85,505.08x = 117,996.72 × 47,779.33
  4. Step 4: Simplify right side
    85,505.08x = 5,637,804,223.80
  5. Step 5: Solve for x
    x = 5,637,804,223.80/85,505.08
  6. Step 6: Final answer
    x = 65,935.31

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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.