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Finding the Fourth Proportional to 79,653.66, 109,885.14 and 51,368.46

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Solution

The fourth proportional to 79,653.66, 109,885.14 and 51,368.46 is: 70,864.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,653.66 : 109,885.14 = 51,368.46 : x
  2. Step 2: Convert to fraction form
    79,653.66/109,885.14 = 51,368.46/x
  3. Step 3: Cross multiply
    79,653.66x = 109,885.14 × 51,368.46
  4. Step 4: Simplify right side
    79,653.66x = 5,644,630,418.68
  5. Step 5: Solve for x
    x = 5,644,630,418.68/79,653.66
  6. Step 6: Final answer
    x = 70,864.67

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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.