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Finding the Fourth Proportional to 72,798.96, 100,462.24 and 40,968.40

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Solution

The fourth proportional to 72,798.96, 100,462.24 and 40,968.40 is: 56,536.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,798.96 : 100,462.24 = 40,968.40 : x
  2. Step 2: Convert to fraction form
    72,798.96/100,462.24 = 40,968.40/x
  3. Step 3: Cross multiply
    72,798.96x = 100,462.24 × 40,968.40
  4. Step 4: Simplify right side
    72,798.96x = 4,115,777,233.22
  5. Step 5: Solve for x
    x = 4,115,777,233.22/72,798.96
  6. Step 6: Final answer
    x = 56,536.21

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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.