Home / 57,053.70-78,728.05-31,556.02

Finding the Fourth Proportional to 57,053.70, 78,728.05 and 31,556.02

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Solution

The fourth proportional to 57,053.70, 78,728.05 and 31,556.02 is: 43,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,053.70 : 78,728.05 = 31,556.02 : x
  2. Step 2: Convert to fraction form
    57,053.70/78,728.05 = 31,556.02/x
  3. Step 3: Cross multiply
    57,053.70x = 78,728.05 × 31,556.02
  4. Step 4: Simplify right side
    57,053.70x = 2,484,343,368.94
  5. Step 5: Solve for x
    x = 2,484,343,368.94/57,053.70
  6. Step 6: Final answer
    x = 43,543.95

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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.