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Finding the Fourth Proportional to 72,984.33, 100,655.48 and 47,481.39

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Solution

The fourth proportional to 72,984.33, 100,655.48 and 47,481.39 is: 65,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,984.33 : 100,655.48 = 47,481.39 : x
  2. Step 2: Convert to fraction form
    72,984.33/100,655.48 = 47,481.39/x
  3. Step 3: Cross multiply
    72,984.33x = 100,655.48 × 47,481.39
  4. Step 4: Simplify right side
    72,984.33x = 4,779,262,371.77
  5. Step 5: Solve for x
    x = 4,779,262,371.77/72,984.33
  6. Step 6: Final answer
    x = 65,483.40

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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.