Home / 79,178.40-109,278.54-45,186.84

Finding the Fourth Proportional to 79,178.40, 109,278.54 and 45,186.84

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Solution

The fourth proportional to 79,178.40, 109,278.54 and 45,186.84 is: 62,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.40 : 109,278.54 = 45,186.84 : x
  2. Step 2: Convert to fraction form
    79,178.40/109,278.54 = 45,186.84/x
  3. Step 3: Cross multiply
    79,178.40x = 109,278.54 × 45,186.84
  4. Step 4: Simplify right side
    79,178.40x = 4,937,951,902.41
  5. Step 5: Solve for x
    x = 4,937,951,902.41/79,178.40
  6. Step 6: Final answer
    x = 62,364.89

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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.