Home / 78,314,668.20-117,472,002.30-47,703,666.60

Finding the Fourth Proportional to 78,314,668.20, 117,472,002.30 and 47,703,666.60

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Solution

The fourth proportional to 78,314,668.20, 117,472,002.30 and 47,703,666.60 is: 71,555,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,314,668.20 : 117,472,002.30 = 47,703,666.60 : x
  2. Step 2: Convert to fraction form
    78,314,668.20/117,472,002.30 = 47,703,666.60/x
  3. Step 3: Cross multiply
    78,314,668.20x = 117,472,002.30 × 47,703,666.60
  4. Step 4: Simplify right side
    78,314,668.20x = 5,603,845,232,553,633
  5. Step 5: Solve for x
    x = 5,603,845,232,553,633/78,314,668.20
  6. Step 6: Final answer
    x = 71,555,499.90

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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.