Home / 78,245,969.70-117,368,954.55-65,585,864.10

Finding the Fourth Proportional to 78,245,969.70, 117,368,954.55 and 65,585,864.10

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Solution

The fourth proportional to 78,245,969.70, 117,368,954.55 and 65,585,864.10 is: 98,378,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,245,969.70 : 117,368,954.55 = 65,585,864.10 : x
  2. Step 2: Convert to fraction form
    78,245,969.70/117,368,954.55 = 65,585,864.10/x
  3. Step 3: Cross multiply
    78,245,969.70x = 117,368,954.55 × 65,585,864.10
  4. Step 4: Simplify right side
    78,245,969.70x = 7,697,744,302,675,377
  5. Step 5: Solve for x
    x = 7,697,744,302,675,377/78,245,969.70
  6. Step 6: Final answer
    x = 98,378,796.15

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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.