Home / 77,912.16-107,518.82-42,102.18

Finding the Fourth Proportional to 77,912.16, 107,518.82 and 42,102.18

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Solution

The fourth proportional to 77,912.16, 107,518.82 and 42,102.18 is: 58,101.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,912.16 : 107,518.82 = 42,102.18 : x
  2. Step 2: Convert to fraction form
    77,912.16/107,518.82 = 42,102.18/x
  3. Step 3: Cross multiply
    77,912.16x = 107,518.82 × 42,102.18
  4. Step 4: Simplify right side
    77,912.16x = 4,526,776,713.03
  5. Step 5: Solve for x
    x = 4,526,776,713.03/77,912.16
  6. Step 6: Final answer
    x = 58,101.03

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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.