Home / 40,728.05-56,238.93-30,638.96

Finding the Fourth Proportional to 40,728.05, 56,238.93 and 30,638.96

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Solution

The fourth proportional to 40,728.05, 56,238.93 and 30,638.96 is: 42,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.05 : 56,238.93 = 30,638.96 : x
  2. Step 2: Convert to fraction form
    40,728.05/56,238.93 = 30,638.96/x
  3. Step 3: Cross multiply
    40,728.05x = 56,238.93 × 30,638.96
  4. Step 4: Simplify right side
    40,728.05x = 1,723,102,326.71
  5. Step 5: Solve for x
    x = 1,723,102,326.71/40,728.05
  6. Step 6: Final answer
    x = 42,307.51

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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.