Home / 84,823.20-117,045-47,090.16

Finding the Fourth Proportional to 84,823.20, 117,045 and 47,090.16

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Solution

The fourth proportional to 84,823.20, 117,045 and 47,090.16 is: 64,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,823.20 : 117,045 = 47,090.16 : x
  2. Step 2: Convert to fraction form
    84,823.20/117,045 = 47,090.16/x
  3. Step 3: Cross multiply
    84,823.20x = 117,045 × 47,090.16
  4. Step 4: Simplify right side
    84,823.20x = 5,511,667,777.20
  5. Step 5: Solve for x
    x = 5,511,667,777.20/84,823.20
  6. Step 6: Final answer
    x = 64,978.31

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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.