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Finding the Fourth Proportional to 72,852.48, 109,313.28 and 43,328.52

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Solution

The fourth proportional to 72,852.48, 109,313.28 and 43,328.52 is: 65,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,852.48 : 109,313.28 = 43,328.52 : x
  2. Step 2: Convert to fraction form
    72,852.48/109,313.28 = 43,328.52/x
  3. Step 3: Cross multiply
    72,852.48x = 109,313.28 × 43,328.52
  4. Step 4: Simplify right side
    72,852.48x = 4,736,382,638.75
  5. Step 5: Solve for x
    x = 4,736,382,638.75/72,852.48
  6. Step 6: Final answer
    x = 65,013.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.