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Finding the Fourth Proportional to 72,899.67, 100,580.58 and 47,443.50

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Solution

The fourth proportional to 72,899.67, 100,580.58 and 47,443.50 is: 65,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,899.67 : 100,580.58 = 47,443.50 : x
  2. Step 2: Convert to fraction form
    72,899.67/100,580.58 = 47,443.50/x
  3. Step 3: Cross multiply
    72,899.67x = 100,580.58 × 47,443.50
  4. Step 4: Simplify right side
    72,899.67x = 4,771,894,244.33
  5. Step 5: Solve for x
    x = 4,771,894,244.33/72,899.67
  6. Step 6: Final answer
    x = 65,458.38

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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.