Home / 90,480.36-124,781.07-56,491.95

Finding the Fourth Proportional to 90,480.36, 124,781.07 and 56,491.95

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Solution

The fourth proportional to 90,480.36, 124,781.07 and 56,491.95 is: 77,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,480.36 : 124,781.07 = 56,491.95 : x
  2. Step 2: Convert to fraction form
    90,480.36/124,781.07 = 56,491.95/x
  3. Step 3: Cross multiply
    90,480.36x = 124,781.07 × 56,491.95
  4. Step 4: Simplify right side
    90,480.36x = 7,049,125,967.39
  5. Step 5: Solve for x
    x = 7,049,125,967.39/90,480.36
  6. Step 6: Final answer
    x = 77,907.80

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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.