Home / 72,768.34-100,383.57-42,533.91

Finding the Fourth Proportional to 72,768.34, 100,383.57 and 42,533.91

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Solution

The fourth proportional to 72,768.34, 100,383.57 and 42,533.91 is: 58,675.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768.34 : 100,383.57 = 42,533.91 : x
  2. Step 2: Convert to fraction form
    72,768.34/100,383.57 = 42,533.91/x
  3. Step 3: Cross multiply
    72,768.34x = 100,383.57 × 42,533.91
  4. Step 4: Simplify right side
    72,768.34x = 4,269,705,519.19
  5. Step 5: Solve for x
    x = 4,269,705,519.19/72,768.34
  6. Step 6: Final answer
    x = 58,675.32

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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.