Home / 79,477.40-109,678.25-43,178.67

Finding the Fourth Proportional to 79,477.40, 109,678.25 and 43,178.67

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Solution

The fourth proportional to 79,477.40, 109,678.25 and 43,178.67 is: 59,586.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,477.40 : 109,678.25 = 43,178.67 : x
  2. Step 2: Convert to fraction form
    79,477.40/109,678.25 = 43,178.67/x
  3. Step 3: Cross multiply
    79,477.40x = 109,678.25 × 43,178.67
  4. Step 4: Simplify right side
    79,477.40x = 4,735,761,070.87
  5. Step 5: Solve for x
    x = 4,735,761,070.87/79,477.40
  6. Step 6: Final answer
    x = 59,586.26

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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.