Home / 57,289.64-79,038-42,218.25

Finding the Fourth Proportional to 57,289.64, 79,038 and 42,218.25

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Solution

The fourth proportional to 57,289.64, 79,038 and 42,218.25 is: 58,245.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,289.64 : 79,038 = 42,218.25 : x
  2. Step 2: Convert to fraction form
    57,289.64/79,038 = 42,218.25/x
  3. Step 3: Cross multiply
    57,289.64x = 79,038 × 42,218.25
  4. Step 4: Simplify right side
    57,289.64x = 3,336,846,043.50
  5. Step 5: Solve for x
    x = 3,336,846,043.50/57,289.64
  6. Step 6: Final answer
    x = 58,245.19

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1.5x scale

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.