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Finding the Fourth Proportional to 86,400, 119,238.12 and 48,674.25

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Solution

The fourth proportional to 86,400, 119,238.12 and 48,674.25 is: 67,173.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,400 : 119,238.12 = 48,674.25 : x
  2. Step 2: Convert to fraction form
    86,400/119,238.12 = 48,674.25/x
  3. Step 3: Cross multiply
    86,400x = 119,238.12 × 48,674.25
  4. Step 4: Simplify right side
    86,400x = 5,803,826,062.41
  5. Step 5: Solve for x
    x = 5,803,826,062.41/86,400
  6. Step 6: Final answer
    x = 67,173.91

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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.