Home / 56,869.36-78,479.52-31,718.84

Finding the Fourth Proportional to 56,869.36, 78,479.52 and 31,718.84

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Solution

The fourth proportional to 56,869.36, 78,479.52 and 31,718.84 is: 43,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,869.36 : 78,479.52 = 31,718.84 : x
  2. Step 2: Convert to fraction form
    56,869.36/78,479.52 = 31,718.84/x
  3. Step 3: Cross multiply
    56,869.36x = 78,479.52 × 31,718.84
  4. Step 4: Simplify right side
    56,869.36x = 2,489,279,338.16
  5. Step 5: Solve for x
    x = 2,489,279,338.16/56,869.36
  6. Step 6: Final answer
    x = 43,771.89

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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.