Home / 56,771.47-78,345.39-31,620.97

Finding the Fourth Proportional to 56,771.47, 78,345.39 and 31,620.97

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Solution

The fourth proportional to 56,771.47, 78,345.39 and 31,620.97 is: 43,637.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,771.47 : 78,345.39 = 31,620.97 : x
  2. Step 2: Convert to fraction form
    56,771.47/78,345.39 = 31,620.97/x
  3. Step 3: Cross multiply
    56,771.47x = 78,345.39 × 31,620.97
  4. Step 4: Simplify right side
    56,771.47x = 2,477,357,226.83
  5. Step 5: Solve for x
    x = 2,477,357,226.83/56,771.47
  6. Step 6: Final answer
    x = 43,637.36

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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.