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Finding the Fourth Proportional to 72,486.09, 100,010.30 and 46,993.50

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Solution

The fourth proportional to 72,486.09, 100,010.30 and 46,993.50 is: 64,837.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,486.09 : 100,010.30 = 46,993.50 : x
  2. Step 2: Convert to fraction form
    72,486.09/100,010.30 = 46,993.50/x
  3. Step 3: Cross multiply
    72,486.09x = 100,010.30 × 46,993.50
  4. Step 4: Simplify right side
    72,486.09x = 4,699,833,798.08
  5. Step 5: Solve for x
    x = 4,699,833,798.08/72,486.09
  6. Step 6: Final answer
    x = 64,837.73

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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.