Home / 105,578.36-145,692.96-57,831.92

Finding the Fourth Proportional to 105,578.36, 145,692.96 and 57,831.92

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Solution

The fourth proportional to 105,578.36, 145,692.96 and 57,831.92 is: 79,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,578.36 : 145,692.96 = 57,831.92 : x
  2. Step 2: Convert to fraction form
    105,578.36/145,692.96 = 57,831.92/x
  3. Step 3: Cross multiply
    105,578.36x = 145,692.96 × 57,831.92
  4. Step 4: Simplify right side
    105,578.36x = 8,425,703,607.28
  5. Step 5: Solve for x
    x = 8,425,703,607.28/105,578.36
  6. Step 6: Final answer
    x = 79,805.21

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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.