Home / 73,989.28-102,105.60-40,455.28

Finding the Fourth Proportional to 73,989.28, 102,105.60 and 40,455.28

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Solution

The fourth proportional to 73,989.28, 102,105.60 and 40,455.28 is: 55,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,989.28 : 102,105.60 = 40,455.28 : x
  2. Step 2: Convert to fraction form
    73,989.28/102,105.60 = 40,455.28/x
  3. Step 3: Cross multiply
    73,989.28x = 102,105.60 × 40,455.28
  4. Step 4: Simplify right side
    73,989.28x = 4,130,710,637.57
  5. Step 5: Solve for x
    x = 4,130,710,637.57/73,989.28
  6. Step 6: Final answer
    x = 55,828.50

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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.