Home / 85,147.70-117,507.45-47,421.95

Finding the Fourth Proportional to 85,147.70, 117,507.45 and 47,421.95

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Solution

The fourth proportional to 85,147.70, 117,507.45 and 47,421.95 is: 65,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,147.70 : 117,507.45 = 47,421.95 : x
  2. Step 2: Convert to fraction form
    85,147.70/117,507.45 = 47,421.95/x
  3. Step 3: Cross multiply
    85,147.70x = 117,507.45 × 47,421.95
  4. Step 4: Simplify right side
    85,147.70x = 5,572,431,830.99
  5. Step 5: Solve for x
    x = 5,572,431,830.99/85,147.70
  6. Step 6: Final answer
    x = 65,444.31

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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.