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Finding the Fourth Proportional to 78,369.45, 108,182.93 and 52,910.28

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Solution

The fourth proportional to 78,369.45, 108,182.93 and 52,910.28 is: 73,038.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,369.45 : 108,182.93 = 52,910.28 : x
  2. Step 2: Convert to fraction form
    78,369.45/108,182.93 = 52,910.28/x
  3. Step 3: Cross multiply
    78,369.45x = 108,182.93 × 52,910.28
  4. Step 4: Simplify right side
    78,369.45x = 5,723,989,457.07
  5. Step 5: Solve for x
    x = 5,723,989,457.07/78,369.45
  6. Step 6: Final answer
    x = 73,038.53

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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.