Home / 78,556.08-108,408.54-42,746.16

Finding the Fourth Proportional to 78,556.08, 108,408.54 and 42,746.16

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Solution

The fourth proportional to 78,556.08, 108,408.54 and 42,746.16 is: 58,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,556.08 : 108,408.54 = 42,746.16 : x
  2. Step 2: Convert to fraction form
    78,556.08/108,408.54 = 42,746.16/x
  3. Step 3: Cross multiply
    78,556.08x = 108,408.54 × 42,746.16
  4. Step 4: Simplify right side
    78,556.08x = 4,634,048,796.21
  5. Step 5: Solve for x
    x = 4,634,048,796.21/78,556.08
  6. Step 6: Final answer
    x = 58,990.33

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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.