Home / 56,979.37-78,631.53-31,828.87

Finding the Fourth Proportional to 56,979.37, 78,631.53 and 31,828.87

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Solution

The fourth proportional to 56,979.37, 78,631.53 and 31,828.87 is: 43,923.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,979.37 : 78,631.53 = 31,828.87 : x
  2. Step 2: Convert to fraction form
    56,979.37/78,631.53 = 31,828.87/x
  3. Step 3: Cross multiply
    56,979.37x = 78,631.53 × 31,828.87
  4. Step 4: Simplify right side
    56,979.37x = 2,502,752,587.13
  5. Step 5: Solve for x
    x = 2,502,752,587.13/56,979.37
  6. Step 6: Final answer
    x = 43,923.84

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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.