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Finding the Third Proportional to 58,980.75 and 128,329.13

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Solution

The third proportional to 58,980.75 and 128,329.13 is: 279,215.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,980.75 : 128,329.13 = 128,329.13 : x
  2. Step 2: Convert to fraction form
    58,980.75/128,329.13 = 128,329.13/x
  3. Step 3: Cross multiply
    58,980.75x = 128,329.13 × 128,329.13
  4. Step 4: Simplify right side
    58,980.75x = 16,468,364,323.27
  5. Step 5: Solve for x
    x = 16,468,364,323.27/58,980.75
  6. Step 6: Final answer
    x = 279,215.92

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.