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Finding the Third Proportional to 30,602.50 and 64,879

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Solution

The third proportional to 30,602.50 and 64,879 is: 137,547.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602.50 : 64,879 = 64,879 : x
  2. Step 2: Convert to fraction form
    30,602.50/64,879 = 64,879/x
  3. Step 3: Cross multiply
    30,602.50x = 64,879 × 64,879
  4. Step 4: Simplify right side
    30,602.50x = 4,209,284,641
  5. Step 5: Solve for x
    x = 4,209,284,641/30,602.50
  6. Step 6: Final answer
    x = 137,547.08

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.