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Finding the Fourth Proportional to 79,018.56, 109,045.74 and 43,208.76

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Solution

The fourth proportional to 79,018.56, 109,045.74 and 43,208.76 is: 59,628.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,018.56 : 109,045.74 = 43,208.76 : x
  2. Step 2: Convert to fraction form
    79,018.56/109,045.74 = 43,208.76/x
  3. Step 3: Cross multiply
    79,018.56x = 109,045.74 × 43,208.76
  4. Step 4: Simplify right side
    79,018.56x = 4,711,731,208.68
  5. Step 5: Solve for x
    x = 4,711,731,208.68/79,018.56
  6. Step 6: Final answer
    x = 59,628.16

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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.