Home / 57,054.70-78,729.43-31,557.01

Finding the Fourth Proportional to 57,054.70, 78,729.43 and 31,557.01

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Solution

The fourth proportional to 57,054.70, 78,729.43 and 31,557.01 is: 43,545.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,054.70 : 78,729.43 = 31,557.01 : x
  2. Step 2: Convert to fraction form
    57,054.70/78,729.43 = 31,557.01/x
  3. Step 3: Cross multiply
    57,054.70x = 78,729.43 × 31,557.01
  4. Step 4: Simplify right side
    57,054.70x = 2,484,465,409.80
  5. Step 5: Solve for x
    x = 2,484,465,409.80/57,054.70
  6. Step 6: Final answer
    x = 43,545.32

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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.