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Finding the Fourth Proportional to 51,208.80, 70,670.88 and 29,989.68

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Solution

The fourth proportional to 51,208.80, 70,670.88 and 29,989.68 is: 41,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,208.80 : 70,670.88 = 29,989.68 : x
  2. Step 2: Convert to fraction form
    51,208.80/70,670.88 = 29,989.68/x
  3. Step 3: Cross multiply
    51,208.80x = 70,670.88 × 29,989.68
  4. Step 4: Simplify right side
    51,208.80x = 2,119,397,076.52
  5. Step 5: Solve for x
    x = 2,119,397,076.52/51,208.80
  6. Step 6: Final answer
    x = 41,387.36

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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.