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Finding the Fourth Proportional to 47,672.99, 71,532.57 and 19,613.78

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Solution

The fourth proportional to 47,672.99, 71,532.57 and 19,613.78 is: 29,430.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,672.99 : 71,532.57 = 19,613.78 : x
  2. Step 2: Convert to fraction form
    47,672.99/71,532.57 = 19,613.78/x
  3. Step 3: Cross multiply
    47,672.99x = 71,532.57 × 19,613.78
  4. Step 4: Simplify right side
    47,672.99x = 1,403,024,090.81
  5. Step 5: Solve for x
    x = 1,403,024,090.81/47,672.99
  6. Step 6: Final answer
    x = 29,430.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.