Home / 72,768.34-100,420.14-40,937.23

Finding the Fourth Proportional to 72,768.34, 100,420.14 and 40,937.23

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Solution

The fourth proportional to 72,768.34, 100,420.14 and 40,937.23 is: 56,493.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768.34 : 100,420.14 = 40,937.23 : x
  2. Step 2: Convert to fraction form
    72,768.34/100,420.14 = 40,937.23/x
  3. Step 3: Cross multiply
    72,768.34x = 100,420.14 × 40,937.23
  4. Step 4: Simplify right side
    72,768.34x = 4,110,922,367.81
  5. Step 5: Solve for x
    x = 4,110,922,367.81/72,768.34
  6. Step 6: Final answer
    x = 56,493.28

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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.