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Finding the Fourth Proportional to 65,698,771.94, 90,664,892.72 and 36,332,080.39

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Solution

The fourth proportional to 65,698,771.94, 90,664,892.72 and 36,332,080.39 is: 50,138,595.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,698,771.94 : 90,664,892.72 = 36,332,080.39 : x
  2. Step 2: Convert to fraction form
    65,698,771.94/90,664,892.72 = 36,332,080.39/x
  3. Step 3: Cross multiply
    65,698,771.94x = 90,664,892.72 × 36,332,080.39
  4. Step 4: Simplify right side
    65,698,771.94x = 3,294,044,170,581,688.50
  5. Step 5: Solve for x
    x = 3,294,044,170,581,688.50/65,698,771.94
  6. Step 6: Final answer
    x = 50,138,595.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.