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Finding the Fourth Proportional to 79,746,911.60, 119,620,367.40 and 28,622,287.40

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Solution

The fourth proportional to 79,746,911.60, 119,620,367.40 and 28,622,287.40 is: 42,933,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,746,911.60 : 119,620,367.40 = 28,622,287.40 : x
  2. Step 2: Convert to fraction form
    79,746,911.60/119,620,367.40 = 28,622,287.40/x
  3. Step 3: Cross multiply
    79,746,911.60x = 119,620,367.40 × 28,622,287.40
  4. Step 4: Simplify right side
    79,746,911.60x = 3,423,808,534,616,391
  5. Step 5: Solve for x
    x = 3,423,808,534,616,391/79,746,911.60
  6. Step 6: Final answer
    x = 42,933,431.10

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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.