Home / 76,112.21-105,032.70-42,122.12

Finding the Fourth Proportional to 76,112.21, 105,032.70 and 42,122.12

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Solution

The fourth proportional to 76,112.21, 105,032.70 and 42,122.12 is: 58,127.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,112.21 : 105,032.70 = 42,122.12 : x
  2. Step 2: Convert to fraction form
    76,112.21/105,032.70 = 42,122.12/x
  3. Step 3: Cross multiply
    76,112.21x = 105,032.70 × 42,122.12
  4. Step 4: Simplify right side
    76,112.21x = 4,424,199,468.16
  5. Step 5: Solve for x
    x = 4,424,199,468.16/76,112.21
  6. Step 6: Final answer
    x = 58,127.33

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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.