Home / 105,578.70-145,697.67-57,831.90

Finding the Fourth Proportional to 105,578.70, 145,697.67 and 57,831.90

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Solution

The fourth proportional to 105,578.70, 145,697.67 and 57,831.90 is: 79,807.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,578.70 : 145,697.67 = 57,831.90 : x
  2. Step 2: Convert to fraction form
    105,578.70/145,697.67 = 57,831.90/x
  3. Step 3: Cross multiply
    105,578.70x = 145,697.67 × 57,831.90
  4. Step 4: Simplify right side
    105,578.70x = 8,425,973,081.67
  5. Step 5: Solve for x
    x = 8,425,973,081.67/105,578.70
  6. Step 6: Final answer
    x = 79,807.51

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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.