Home / 72,729.36-100,243.17-55,495.80

Finding the Fourth Proportional to 72,729.36, 100,243.17 and 55,495.80

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Solution

The fourth proportional to 72,729.36, 100,243.17 and 55,495.80 is: 76,490.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,729.36 : 100,243.17 = 55,495.80 : x
  2. Step 2: Convert to fraction form
    72,729.36/100,243.17 = 55,495.80/x
  3. Step 3: Cross multiply
    72,729.36x = 100,243.17 × 55,495.80
  4. Step 4: Simplify right side
    72,729.36x = 5,563,074,913.69
  5. Step 5: Solve for x
    x = 5,563,074,913.69/72,729.36
  6. Step 6: Final answer
    x = 76,490.08

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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.