Home / 76,106.51-105,023.25-42,114.36

Finding the Fourth Proportional to 76,106.51, 105,023.25 and 42,114.36

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Solution

The fourth proportional to 76,106.51, 105,023.25 and 42,114.36 is: 58,115.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,106.51 : 105,023.25 = 42,114.36 : x
  2. Step 2: Convert to fraction form
    76,106.51/105,023.25 = 42,114.36/x
  3. Step 3: Cross multiply
    76,106.51x = 105,023.25 × 42,114.36
  4. Step 4: Simplify right side
    76,106.51x = 4,422,986,958.87
  5. Step 5: Solve for x
    x = 4,422,986,958.87/76,106.51
  6. Step 6: Final answer
    x = 58,115.75

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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.