Home / 7,191,986.70-9,915,680.34-5,129,354.10

Finding the Fourth Proportional to 7,191,986.70, 9,915,680.34 and 5,129,354.10

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Solution

The fourth proportional to 7,191,986.70, 9,915,680.34 and 5,129,354.10 is: 7,071,903.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191,986.70 : 9,915,680.34 = 5,129,354.10 : x
  2. Step 2: Convert to fraction form
    7,191,986.70/9,915,680.34 = 5,129,354.10/x
  3. Step 3: Cross multiply
    7,191,986.70x = 9,915,680.34 × 5,129,354.10
  4. Step 4: Simplify right side
    7,191,986.70x = 50,861,035,606,268.39
  5. Step 5: Solve for x
    x = 50,861,035,606,268.39/7,191,986.70
  6. Step 6: Final answer
    x = 7,071,903.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.