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Finding the Fourth Proportional to 85,479.81, 118,008.70 and 51,496.56

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Solution

The fourth proportional to 85,479.81, 118,008.70 and 51,496.56 is: 71,093.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,479.81 : 118,008.70 = 51,496.56 : x
  2. Step 2: Convert to fraction form
    85,479.81/118,008.70 = 51,496.56/x
  3. Step 3: Cross multiply
    85,479.81x = 118,008.70 × 51,496.56
  4. Step 4: Simplify right side
    85,479.81x = 6,077,041,971.33
  5. Step 5: Solve for x
    x = 6,077,041,971.33/85,479.81
  6. Step 6: Final answer
    x = 71,093.31

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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.