Home / 78,538,505.80-117,768,337.26-45,759,685

Finding the Fourth Proportional to 78,538,505.80, 117,768,337.26 and 45,759,685

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Solution

The fourth proportional to 78,538,505.80, 117,768,337.26 and 45,759,685 is: 68,616,558.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,538,505.80 : 117,768,337.26 = 45,759,685 : x
  2. Step 2: Convert to fraction form
    78,538,505.80/117,768,337.26 = 45,759,685/x
  3. Step 3: Cross multiply
    78,538,505.80x = 117,768,337.26 × 45,759,685
  4. Step 4: Simplify right side
    78,538,505.80x = 5,389,042,015,991,363
  5. Step 5: Solve for x
    x = 5,389,042,015,991,363/78,538,505.80
  6. Step 6: Final answer
    x = 68,616,558.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.