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Finding the Fourth Proportional to 79,873,341.80, 119,810,012.70 and 39,475,466.60

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Solution

The fourth proportional to 79,873,341.80, 119,810,012.70 and 39,475,466.60 is: 59,213,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,873,341.80 : 119,810,012.70 = 39,475,466.60 : x
  2. Step 2: Convert to fraction form
    79,873,341.80/119,810,012.70 = 39,475,466.60/x
  3. Step 3: Cross multiply
    79,873,341.80x = 119,810,012.70 × 39,475,466.60
  4. Step 4: Simplify right side
    79,873,341.80x = 4,729,556,154,684,426
  5. Step 5: Solve for x
    x = 4,729,556,154,684,426/79,873,341.80
  6. Step 6: Final answer
    x = 59,213,199.90

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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.