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Finding the Fourth Proportional to 70,798,879.92, 106,209,517.32 and 25,359,668.40

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Solution

The fourth proportional to 70,798,879.92, 106,209,517.32 and 25,359,668.40 is: 38,043,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,798,879.92 : 106,209,517.32 = 25,359,668.40 : x
  2. Step 2: Convert to fraction form
    70,798,879.92/106,209,517.32 = 25,359,668.40/x
  3. Step 3: Cross multiply
    70,798,879.92x = 106,209,517.32 × 25,359,668.40
  4. Step 4: Simplify right side
    70,798,879.92x = 2,693,438,140,159,256.50
  5. Step 5: Solve for x
    x = 2,693,438,140,159,256.50/70,798,879.92
  6. Step 6: Final answer
    x = 38,043,513.45

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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.