Home / 42,735.48-64,103.26-11,145.51

Finding the Fourth Proportional to 42,735.48, 64,103.26 and 11,145.51

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Solution

The fourth proportional to 42,735.48, 64,103.26 and 11,145.51 is: 16,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,735.48 : 64,103.26 = 11,145.51 : x
  2. Step 2: Convert to fraction form
    42,735.48/64,103.26 = 11,145.51/x
  3. Step 3: Cross multiply
    42,735.48x = 64,103.26 × 11,145.51
  4. Step 4: Simplify right side
    42,735.48x = 714,463,525.36
  5. Step 5: Solve for x
    x = 714,463,525.36/42,735.48
  6. Step 6: Final answer
    x = 16,718.28

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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.