Home / 51,430.80-77,261.40-49,331.60

Finding the Fourth Proportional to 51,430.80, 77,261.40 and 49,331.60

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Solution

The fourth proportional to 51,430.80, 77,261.40 and 49,331.60 is: 74,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.80 : 77,261.40 = 49,331.60 : x
  2. Step 2: Convert to fraction form
    51,430.80/77,261.40 = 49,331.60/x
  3. Step 3: Cross multiply
    51,430.80x = 77,261.40 × 49,331.60
  4. Step 4: Simplify right side
    51,430.80x = 3,811,428,480.24
  5. Step 5: Solve for x
    x = 3,811,428,480.24/51,430.80
  6. Step 6: Final answer
    x = 74,107.90

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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.