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Finding the Fourth Proportional to 86,434.56, 119,220.48 and 52,917.12

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Solution

The fourth proportional to 86,434.56, 119,220.48 and 52,917.12 is: 72,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,434.56 : 119,220.48 = 52,917.12 : x
  2. Step 2: Convert to fraction form
    86,434.56/119,220.48 = 52,917.12/x
  3. Step 3: Cross multiply
    86,434.56x = 119,220.48 × 52,917.12
  4. Step 4: Simplify right side
    86,434.56x = 6,308,804,446.62
  5. Step 5: Solve for x
    x = 6,308,804,446.62/86,434.56
  6. Step 6: Final answer
    x = 72,989.37

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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.