Home / 86,985.50-120,037.93-51,177.80

Finding the Fourth Proportional to 86,985.50, 120,037.93 and 51,177.80

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Solution

The fourth proportional to 86,985.50, 120,037.93 and 51,177.80 is: 70,624.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.50 : 120,037.93 = 51,177.80 : x
  2. Step 2: Convert to fraction form
    86,985.50/120,037.93 = 51,177.80/x
  3. Step 3: Cross multiply
    86,985.50x = 120,037.93 × 51,177.80
  4. Step 4: Simplify right side
    86,985.50x = 6,143,277,346.10
  5. Step 5: Solve for x
    x = 6,143,277,346.10/86,985.50
  6. Step 6: Final answer
    x = 70,624.16

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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.