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Finding the Fourth Proportional to 78,368.58, 108,142.65 and 46,104.49

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Solution

The fourth proportional to 78,368.58, 108,142.65 and 46,104.49 is: 63,620.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,368.58 : 108,142.65 = 46,104.49 : x
  2. Step 2: Convert to fraction form
    78,368.58/108,142.65 = 46,104.49/x
  3. Step 3: Cross multiply
    78,368.58x = 108,142.65 × 46,104.49
  4. Step 4: Simplify right side
    78,368.58x = 4,985,861,382.04
  5. Step 5: Solve for x
    x = 4,985,861,382.04/78,368.58
  6. Step 6: Final answer
    x = 63,620.67

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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.