Home / 57,054.80-78,728.64-31,557.62

Finding the Fourth Proportional to 57,054.80, 78,728.64 and 31,557.62

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Solution

The fourth proportional to 57,054.80, 78,728.64 and 31,557.62 is: 43,545.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,054.80 : 78,728.64 = 31,557.62 : x
  2. Step 2: Convert to fraction form
    57,054.80/78,728.64 = 31,557.62/x
  3. Step 3: Cross multiply
    57,054.80x = 78,728.64 × 31,557.62
  4. Step 4: Simplify right side
    57,054.80x = 2,484,488,504.24
  5. Step 5: Solve for x
    x = 2,484,488,504.24/57,054.80
  6. Step 6: Final answer
    x = 43,545.65

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1.5x scale

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.