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Finding the Fourth Proportional to 86,860.70, 130,037.50 and 53,480.60

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Solution

The fourth proportional to 86,860.70, 130,037.50 and 53,480.60 is: 80,064.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,860.70 : 130,037.50 = 53,480.60 : x
  2. Step 2: Convert to fraction form
    86,860.70/130,037.50 = 53,480.60/x
  3. Step 3: Cross multiply
    86,860.70x = 130,037.50 × 53,480.60
  4. Step 4: Simplify right side
    86,860.70x = 6,954,483,522.50
  5. Step 5: Solve for x
    x = 6,954,483,522.50/86,860.70
  6. Step 6: Final answer
    x = 80,064.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.