Home / 64,579.86-89,122.17-39,090.87

Finding the Fourth Proportional to 64,579.86, 89,122.17 and 39,090.87

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Solution

The fourth proportional to 64,579.86, 89,122.17 and 39,090.87 is: 53,946.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,579.86 : 89,122.17 = 39,090.87 : x
  2. Step 2: Convert to fraction form
    64,579.86/89,122.17 = 39,090.87/x
  3. Step 3: Cross multiply
    64,579.86x = 89,122.17 × 39,090.87
  4. Step 4: Simplify right side
    64,579.86x = 3,483,863,161.59
  5. Step 5: Solve for x
    x = 3,483,863,161.59/64,579.86
  6. Step 6: Final answer
    x = 53,946.59

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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.