Home / 87,795.58-121,158.30-47,509.60

Finding the Fourth Proportional to 87,795.58, 121,158.30 and 47,509.60

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Solution

The fourth proportional to 87,795.58, 121,158.30 and 47,509.60 is: 65,563.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,795.58 : 121,158.30 = 47,509.60 : x
  2. Step 2: Convert to fraction form
    87,795.58/121,158.30 = 47,509.60/x
  3. Step 3: Cross multiply
    87,795.58x = 121,158.30 × 47,509.60
  4. Step 4: Simplify right side
    87,795.58x = 5,756,182,369.68
  5. Step 5: Solve for x
    x = 5,756,182,369.68/87,795.58
  6. Step 6: Final answer
    x = 65,563.46

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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.