Home / 77,485.28-106,912.24-45,657.12

Finding the Fourth Proportional to 77,485.28, 106,912.24 and 45,657.12

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Solution

The fourth proportional to 77,485.28, 106,912.24 and 45,657.12 is: 62,996.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,485.28 : 106,912.24 = 45,657.12 : x
  2. Step 2: Convert to fraction form
    77,485.28/106,912.24 = 45,657.12/x
  3. Step 3: Cross multiply
    77,485.28x = 106,912.24 × 45,657.12
  4. Step 4: Simplify right side
    77,485.28x = 4,881,304,971.15
  5. Step 5: Solve for x
    x = 4,881,304,971.15/77,485.28
  6. Step 6: Final answer
    x = 62,996.55

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1.5x scale

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.