Home / 76,116.14-105,040.47-42,126.97

Finding the Fourth Proportional to 76,116.14, 105,040.47 and 42,126.97

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Solution

The fourth proportional to 76,116.14, 105,040.47 and 42,126.97 is: 58,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,116.14 : 105,040.47 = 42,126.97 : x
  2. Step 2: Convert to fraction form
    76,116.14/105,040.47 = 42,126.97/x
  3. Step 3: Cross multiply
    76,116.14x = 105,040.47 × 42,126.97
  4. Step 4: Simplify right side
    76,116.14x = 4,425,036,465.87
  5. Step 5: Solve for x
    x = 4,425,036,465.87/76,116.14
  6. Step 6: Final answer
    x = 58,135.32

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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.