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Finding the Fourth Proportional to 84,478.34, 116,388.93 and 69,347.04

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Solution

The fourth proportional to 84,478.34, 116,388.93 and 69,347.04 is: 95,541.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,478.34 : 116,388.93 = 69,347.04 : x
  2. Step 2: Convert to fraction form
    84,478.34/116,388.93 = 69,347.04/x
  3. Step 3: Cross multiply
    84,478.34x = 116,388.93 × 69,347.04
  4. Step 4: Simplify right side
    84,478.34x = 8,071,227,607.86
  5. Step 5: Solve for x
    x = 8,071,227,607.86/84,478.34
  6. Step 6: Final answer
    x = 95,541.97

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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.