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Finding the Fourth Proportional to 72,485.93, 100,029.35 and 40,654.14

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Solution

The fourth proportional to 72,485.93, 100,029.35 and 40,654.14 is: 56,102.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485.93 : 100,029.35 = 40,654.14 : x
  2. Step 2: Convert to fraction form
    72,485.93/100,029.35 = 40,654.14/x
  3. Step 3: Cross multiply
    72,485.93x = 100,029.35 × 40,654.14
  4. Step 4: Simplify right side
    72,485.93x = 4,066,607,300.64
  5. Step 5: Solve for x
    x = 4,066,607,300.64/72,485.93
  6. Step 6: Final answer
    x = 56,102.03

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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.