Home / 43,155.63-64,721.16-21,818.07

Finding the Fourth Proportional to 43,155.63, 64,721.16 and 21,818.07

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Solution

The fourth proportional to 43,155.63, 64,721.16 and 21,818.07 is: 32,720.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,155.63 : 64,721.16 = 21,818.07 : x
  2. Step 2: Convert to fraction form
    43,155.63/64,721.16 = 21,818.07/x
  3. Step 3: Cross multiply
    43,155.63x = 64,721.16 × 21,818.07
  4. Step 4: Simplify right side
    43,155.63x = 1,412,090,799.36
  5. Step 5: Solve for x
    x = 1,412,090,799.36/43,155.63
  6. Step 6: Final answer
    x = 32,720.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.