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Finding the Fourth Proportional to 72,484.34, 100,028.12 and 40,653.36

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Solution

The fourth proportional to 72,484.34, 100,028.12 and 40,653.36 is: 56,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,484.34 : 100,028.12 = 40,653.36 : x
  2. Step 2: Convert to fraction form
    72,484.34/100,028.12 = 40,653.36/x
  3. Step 3: Cross multiply
    72,484.34x = 100,028.12 × 40,653.36
  4. Step 4: Simplify right side
    72,484.34x = 4,066,478,969.22
  5. Step 5: Solve for x
    x = 4,066,478,969.22/72,484.34
  6. Step 6: Final answer
    x = 56,101.49

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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.