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Finding the Third Proportional to 39,549,870 and 86,640,273

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Solution

The third proportional to 39,549,870 and 86,640,273 is: 189,799,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,549,870 : 86,640,273 = 86,640,273 : x
  2. Step 2: Convert to fraction form
    39,549,870/86,640,273 = 86,640,273/x
  3. Step 3: Cross multiply
    39,549,870x = 86,640,273 × 86,640,273
  4. Step 4: Simplify right side
    39,549,870x = 7,506,536,905,514,529
  5. Step 5: Solve for x
    x = 7,506,536,905,514,529/39,549,870
  6. Step 6: Final answer
    x = 189,799,281.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.