Home / 77,976.48-107,485.20-68,528.80

Finding the Fourth Proportional to 77,976.48, 107,485.20 and 68,528.80

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Solution

The fourth proportional to 77,976.48, 107,485.20 and 68,528.80 is: 94,462.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,976.48 : 107,485.20 = 68,528.80 : x
  2. Step 2: Convert to fraction form
    77,976.48/107,485.20 = 68,528.80/x
  3. Step 3: Cross multiply
    77,976.48x = 107,485.20 × 68,528.80
  4. Step 4: Simplify right side
    77,976.48x = 7,365,831,773.76
  5. Step 5: Solve for x
    x = 7,365,831,773.76/77,976.48
  6. Step 6: Final answer
    x = 94,462.22

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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.