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Finding the Fourth Proportional to 85,471.83, 117,901.80 and 51,456.69

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Solution

The fourth proportional to 85,471.83, 117,901.80 and 51,456.69 is: 70,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,471.83 : 117,901.80 = 51,456.69 : x
  2. Step 2: Convert to fraction form
    85,471.83/117,901.80 = 51,456.69/x
  3. Step 3: Cross multiply
    85,471.83x = 117,901.80 × 51,456.69
  4. Step 4: Simplify right side
    85,471.83x = 6,066,836,373.04
  5. Step 5: Solve for x
    x = 6,066,836,373.04/85,471.83
  6. Step 6: Final answer
    x = 70,980.54

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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.