Home / 87,490.40-120,736.72-47,746.40

Finding the Fourth Proportional to 87,490.40, 120,736.72 and 47,746.40

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Solution

The fourth proportional to 87,490.40, 120,736.72 and 47,746.40 is: 65,890.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,490.40 : 120,736.72 = 47,746.40 : x
  2. Step 2: Convert to fraction form
    87,490.40/120,736.72 = 47,746.40/x
  3. Step 3: Cross multiply
    87,490.40x = 120,736.72 × 47,746.40
  4. Step 4: Simplify right side
    87,490.40x = 5,764,743,727.81
  5. Step 5: Solve for x
    x = 5,764,743,727.81/87,490.40
  6. Step 6: Final answer
    x = 65,890.01

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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.