Home / 77,122.42-106,428.20-43,130.52

Finding the Fourth Proportional to 77,122.42, 106,428.20 and 43,130.52

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Solution

The fourth proportional to 77,122.42, 106,428.20 and 43,130.52 is: 59,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,122.42 : 106,428.20 = 43,130.52 : x
  2. Step 2: Convert to fraction form
    77,122.42/106,428.20 = 43,130.52/x
  3. Step 3: Cross multiply
    77,122.42x = 106,428.20 × 43,130.52
  4. Step 4: Simplify right side
    77,122.42x = 4,590,303,608.66
  5. Step 5: Solve for x
    x = 4,590,303,608.66/77,122.42
  6. Step 6: Final answer
    x = 59,519.70

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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.