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Finding the Fourth Proportional to 74,419.25, 102,700.40 and 42,598.40

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Solution

The fourth proportional to 74,419.25, 102,700.40 and 42,598.40 is: 58,786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,419.25 : 102,700.40 = 42,598.40 : x
  2. Step 2: Convert to fraction form
    74,419.25/102,700.40 = 42,598.40/x
  3. Step 3: Cross multiply
    74,419.25x = 102,700.40 × 42,598.40
  4. Step 4: Simplify right side
    74,419.25x = 4,374,871,992.87
  5. Step 5: Solve for x
    x = 4,374,871,992.87/74,419.25
  6. Step 6: Final answer
    x = 58,786.84

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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.