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Finding the Fourth Proportional to 79,804,971.20, 119,707,456.80 and 43,399,294.40

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Solution

The fourth proportional to 79,804,971.20, 119,707,456.80 and 43,399,294.40 is: 65,098,941.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,804,971.20 : 119,707,456.80 = 43,399,294.40 : x
  2. Step 2: Convert to fraction form
    79,804,971.20/119,707,456.80 = 43,399,294.40/x
  3. Step 3: Cross multiply
    79,804,971.20x = 119,707,456.80 × 43,399,294.40
  4. Step 4: Simplify right side
    79,804,971.20x = 5,195,219,159,538,482
  5. Step 5: Solve for x
    x = 5,195,219,159,538,482/79,804,971.20
  6. Step 6: Final answer
    x = 65,098,941.60

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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.