Home / 79,141.40-109,266.12-70,628.96

Finding the Fourth Proportional to 79,141.40, 109,266.12 and 70,628.96

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Solution

The fourth proportional to 79,141.40, 109,266.12 and 70,628.96 is: 97,513.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,141.40 : 109,266.12 = 70,628.96 : x
  2. Step 2: Convert to fraction form
    79,141.40/109,266.12 = 70,628.96/x
  3. Step 3: Cross multiply
    79,141.40x = 109,266.12 × 70,628.96
  4. Step 4: Simplify right side
    79,141.40x = 7,717,352,418.84
  5. Step 5: Solve for x
    x = 7,717,352,418.84/79,141.40
  6. Step 6: Final answer
    x = 97,513.47

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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.