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Finding the Fourth Proportional to 58,144.40, 87,216.60 and 21,203.60

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Solution

The fourth proportional to 58,144.40, 87,216.60 and 21,203.60 is: 31,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,144.40 : 87,216.60 = 21,203.60 : x
  2. Step 2: Convert to fraction form
    58,144.40/87,216.60 = 21,203.60/x
  3. Step 3: Cross multiply
    58,144.40x = 87,216.60 × 21,203.60
  4. Step 4: Simplify right side
    58,144.40x = 1,849,305,899.76
  5. Step 5: Solve for x
    x = 1,849,305,899.76/58,144.40
  6. Step 6: Final answer
    x = 31,805.40

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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.