Home / 77,415.77-116,123.84-21,256.65

Finding the Fourth Proportional to 77,415.77, 116,123.84 and 21,256.65

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Solution

The fourth proportional to 77,415.77, 116,123.84 and 21,256.65 is: 31,885.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,415.77 : 116,123.84 = 21,256.65 : x
  2. Step 2: Convert to fraction form
    77,415.77/116,123.84 = 21,256.65/x
  3. Step 3: Cross multiply
    77,415.77x = 116,123.84 × 21,256.65
  4. Step 4: Simplify right side
    77,415.77x = 2,468,403,717.25
  5. Step 5: Solve for x
    x = 2,468,403,717.25/77,415.77
  6. Step 6: Final answer
    x = 31,885.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.