Home / 52,128.12-71,890.32-40,645.84

Finding the Fourth Proportional to 52,128.12, 71,890.32 and 40,645.84

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Solution

The fourth proportional to 52,128.12, 71,890.32 and 40,645.84 is: 56,055.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,128.12 : 71,890.32 = 40,645.84 : x
  2. Step 2: Convert to fraction form
    52,128.12/71,890.32 = 40,645.84/x
  3. Step 3: Cross multiply
    52,128.12x = 71,890.32 × 40,645.84
  4. Step 4: Simplify right side
    52,128.12x = 2,922,042,444.27
  5. Step 5: Solve for x
    x = 2,922,042,444.27/52,128.12
  6. Step 6: Final answer
    x = 56,055.01

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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.