Home / 77,051.08-105,922.25-66,256.42

Finding the Fourth Proportional to 77,051.08, 105,922.25 and 66,256.42

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Solution

The fourth proportional to 77,051.08, 105,922.25 and 66,256.42 is: 91,082.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,051.08 : 105,922.25 = 66,256.42 : x
  2. Step 2: Convert to fraction form
    77,051.08/105,922.25 = 66,256.42/x
  3. Step 3: Cross multiply
    77,051.08x = 105,922.25 × 66,256.42
  4. Step 4: Simplify right side
    77,051.08x = 7,018,028,752.06
  5. Step 5: Solve for x
    x = 7,018,028,752.06/77,051.08
  6. Step 6: Final answer
    x = 91,082.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.