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Finding the Fourth Proportional to 89,980.80, 124,171.95 and 49,695.05

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Solution

The fourth proportional to 89,980.80, 124,171.95 and 49,695.05 is: 68,578.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,980.80 : 124,171.95 = 49,695.05 : x
  2. Step 2: Convert to fraction form
    89,980.80/124,171.95 = 49,695.05/x
  3. Step 3: Cross multiply
    89,980.80x = 124,171.95 × 49,695.05
  4. Step 4: Simplify right side
    89,980.80x = 6,170,730,642.99
  5. Step 5: Solve for x
    x = 6,170,730,642.99/89,980.80
  6. Step 6: Final answer
    x = 68,578.30

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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.