Home / 57,001.68-78,661.89-31,509.81

Finding the Fourth Proportional to 57,001.68, 78,661.89 and 31,509.81

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Solution

The fourth proportional to 57,001.68, 78,661.89 and 31,509.81 is: 43,483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,001.68 : 78,661.89 = 31,509.81 : x
  2. Step 2: Convert to fraction form
    57,001.68/78,661.89 = 31,509.81/x
  3. Step 3: Cross multiply
    57,001.68x = 78,661.89 × 31,509.81
  4. Step 4: Simplify right side
    57,001.68x = 2,478,621,208.14
  5. Step 5: Solve for x
    x = 2,478,621,208.14/57,001.68
  6. Step 6: Final answer
    x = 43,483.30

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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.