Home / 42,785.64-64,178.64-28,087.56

Finding the Fourth Proportional to 42,785.64, 64,178.64 and 28,087.56

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Solution

The fourth proportional to 42,785.64, 64,178.64 and 28,087.56 is: 42,131.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,785.64 : 64,178.64 = 28,087.56 : x
  2. Step 2: Convert to fraction form
    42,785.64/64,178.64 = 28,087.56/x
  3. Step 3: Cross multiply
    42,785.64x = 64,178.64 × 28,087.56
  4. Step 4: Simplify right side
    42,785.64x = 1,802,621,401.72
  5. Step 5: Solve for x
    x = 1,802,621,401.72/42,785.64
  6. Step 6: Final answer
    x = 42,131.46

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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.