Home / 85,749.32-118,338.47-51,757.34

Finding the Fourth Proportional to 85,749.32, 118,338.47 and 51,757.34

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Solution

The fourth proportional to 85,749.32, 118,338.47 and 51,757.34 is: 71,427.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,749.32 : 118,338.47 = 51,757.34 : x
  2. Step 2: Convert to fraction form
    85,749.32/118,338.47 = 51,757.34/x
  3. Step 3: Cross multiply
    85,749.32x = 118,338.47 × 51,757.34
  4. Step 4: Simplify right side
    85,749.32x = 6,124,884,426.87
  5. Step 5: Solve for x
    x = 6,124,884,426.87/85,749.32
  6. Step 6: Final answer
    x = 71,427.79

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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.