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Finding the Third Proportional to 64,639,255.50 and 90,701,673.75

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Solution

The third proportional to 64,639,255.50 and 90,701,673.75 is: 127,272,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,639,255.50 : 90,701,673.75 = 90,701,673.75 : x
  2. Step 2: Convert to fraction form
    64,639,255.50/90,701,673.75 = 90,701,673.75/x
  3. Step 3: Cross multiply
    64,639,255.50x = 90,701,673.75 × 90,701,673.75
  4. Step 4: Simplify right side
    64,639,255.50x = 8,226,793,621,051,439
  5. Step 5: Solve for x
    x = 8,226,793,621,051,439/64,639,255.50
  6. Step 6: Final answer
    x = 127,272,406.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.