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Finding the Fourth Proportional to 86,625.40, 119,541.90 and 48,900.40

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Solution

The fourth proportional to 86,625.40, 119,541.90 and 48,900.40 is: 67,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,625.40 : 119,541.90 = 48,900.40 : x
  2. Step 2: Convert to fraction form
    86,625.40/119,541.90 = 48,900.40/x
  3. Step 3: Cross multiply
    86,625.40x = 119,541.90 × 48,900.40
  4. Step 4: Simplify right side
    86,625.40x = 5,845,646,726.76
  5. Step 5: Solve for x
    x = 5,845,646,726.76/86,625.40
  6. Step 6: Final answer
    x = 67,481.90

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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.