Home / 75,237.60-112,856.40-70,629.60

Finding the Fourth Proportional to 75,237.60, 112,856.40 and 70,629.60

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Solution

The fourth proportional to 75,237.60, 112,856.40 and 70,629.60 is: 105,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,237.60 : 112,856.40 = 70,629.60 : x
  2. Step 2: Convert to fraction form
    75,237.60/112,856.40 = 70,629.60/x
  3. Step 3: Cross multiply
    75,237.60x = 112,856.40 × 70,629.60
  4. Step 4: Simplify right side
    75,237.60x = 7,971,002,389.44
  5. Step 5: Solve for x
    x = 7,971,002,389.44/75,237.60
  6. Step 6: Final answer
    x = 105,944.40

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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.