Home / 53,409.36-79,765.64-45,426.81

Finding the Fourth Proportional to 53,409.36, 79,765.64 and 45,426.81

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Solution

The fourth proportional to 53,409.36, 79,765.64 and 45,426.81 is: 67,843.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,409.36 : 79,765.64 = 45,426.81 : x
  2. Step 2: Convert to fraction form
    53,409.36/79,765.64 = 45,426.81/x
  3. Step 3: Cross multiply
    53,409.36x = 79,765.64 × 45,426.81
  4. Step 4: Simplify right side
    53,409.36x = 3,623,498,572.81
  5. Step 5: Solve for x
    x = 3,623,498,572.81/53,409.36
  6. Step 6: Final answer
    x = 67,843.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.