Home / 42,745.16-64,130.64-12,760.37

Finding the Fourth Proportional to 42,745.16, 64,130.64 and 12,760.37

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Solution

The fourth proportional to 42,745.16, 64,130.64 and 12,760.37 is: 19,144.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,745.16 : 64,130.64 = 12,760.37 : x
  2. Step 2: Convert to fraction form
    42,745.16/64,130.64 = 12,760.37/x
  3. Step 3: Cross multiply
    42,745.16x = 64,130.64 × 12,760.37
  4. Step 4: Simplify right side
    42,745.16x = 818,330,694.74
  5. Step 5: Solve for x
    x = 818,330,694.74/42,745.16
  6. Step 6: Final answer
    x = 19,144.41

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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.