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Finding the Fourth Proportional to 75,999.84, 104,778 and 53,308.32

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Solution

The fourth proportional to 75,999.84, 104,778 and 53,308.32 is: 73,494.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,999.84 : 104,778 = 53,308.32 : x
  2. Step 2: Convert to fraction form
    75,999.84/104,778 = 53,308.32/x
  3. Step 3: Cross multiply
    75,999.84x = 104,778 × 53,308.32
  4. Step 4: Simplify right side
    75,999.84x = 5,585,539,152.96
  5. Step 5: Solve for x
    x = 5,585,539,152.96/75,999.84
  6. Step 6: Final answer
    x = 73,494.09

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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.