Home / 78,768.08-108,638.52-50,476.40

Finding the Fourth Proportional to 78,768.08, 108,638.52 and 50,476.40

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Solution

The fourth proportional to 78,768.08, 108,638.52 and 50,476.40 is: 69,618.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,768.08 : 108,638.52 = 50,476.40 : x
  2. Step 2: Convert to fraction form
    78,768.08/108,638.52 = 50,476.40/x
  3. Step 3: Cross multiply
    78,768.08x = 108,638.52 × 50,476.40
  4. Step 4: Simplify right side
    78,768.08x = 5,483,681,390.93
  5. Step 5: Solve for x
    x = 5,483,681,390.93/78,768.08
  6. Step 6: Final answer
    x = 69,618.07

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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.