Home / 81,738.95-122,605.02-28,443.13

Finding the Fourth Proportional to 81,738.95, 122,605.02 and 28,443.13

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Solution

The fourth proportional to 81,738.95, 122,605.02 and 28,443.13 is: 42,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,738.95 : 122,605.02 = 28,443.13 : x
  2. Step 2: Convert to fraction form
    81,738.95/122,605.02 = 28,443.13/x
  3. Step 3: Cross multiply
    81,738.95x = 122,605.02 × 28,443.13
  4. Step 4: Simplify right side
    81,738.95x = 3,487,270,216.00
  5. Step 5: Solve for x
    x = 3,487,270,216.00/81,738.95
  6. Step 6: Final answer
    x = 42,663.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.