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Finding the Fourth Proportional to 72,313.82, 108,547.41 and 64,047.50

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Solution

The fourth proportional to 72,313.82, 108,547.41 and 64,047.50 is: 96,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,313.82 : 108,547.41 = 64,047.50 : x
  2. Step 2: Convert to fraction form
    72,313.82/108,547.41 = 64,047.50/x
  3. Step 3: Cross multiply
    72,313.82x = 108,547.41 × 64,047.50
  4. Step 4: Simplify right side
    72,313.82x = 6,952,190,241.98
  5. Step 5: Solve for x
    x = 6,952,190,241.98/72,313.82
  6. Step 6: Final answer
    x = 96,139.16

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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.