Home / 76,178.21-105,154.13-45,964.80

Finding the Fourth Proportional to 76,178.21, 105,154.13 and 45,964.80

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Solution

The fourth proportional to 76,178.21, 105,154.13 and 45,964.80 is: 63,448.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,178.21 : 105,154.13 = 45,964.80 : x
  2. Step 2: Convert to fraction form
    76,178.21/105,154.13 = 45,964.80/x
  3. Step 3: Cross multiply
    76,178.21x = 105,154.13 × 45,964.80
  4. Step 4: Simplify right side
    76,178.21x = 4,833,388,669.54
  5. Step 5: Solve for x
    x = 4,833,388,669.54/76,178.21
  6. Step 6: Final answer
    x = 63,448.45

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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.