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Finding the Fourth Proportional to 58,471.36, 87,668.48 and 21,012.64

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Solution

The fourth proportional to 58,471.36, 87,668.48 and 21,012.64 is: 31,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,471.36 : 87,668.48 = 21,012.64 : x
  2. Step 2: Convert to fraction form
    58,471.36/87,668.48 = 21,012.64/x
  3. Step 3: Cross multiply
    58,471.36x = 87,668.48 × 21,012.64
  4. Step 4: Simplify right side
    58,471.36x = 1,842,146,209.59
  5. Step 5: Solve for x
    x = 1,842,146,209.59/58,471.36
  6. Step 6: Final answer
    x = 31,505.10

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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.