Home / 79,139.40-109,263.36-70,626.96

Finding the Fourth Proportional to 79,139.40, 109,263.36 and 70,626.96

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Solution

The fourth proportional to 79,139.40, 109,263.36 and 70,626.96 is: 97,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.40 : 109,263.36 = 70,626.96 : x
  2. Step 2: Convert to fraction form
    79,139.40/109,263.36 = 70,626.96/x
  3. Step 3: Cross multiply
    79,139.40x = 109,263.36 × 70,626.96
  4. Step 4: Simplify right side
    79,139.40x = 7,716,938,956.19
  5. Step 5: Solve for x
    x = 7,716,938,956.19/79,139.40
  6. Step 6: Final answer
    x = 97,510.71

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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.