Home / 99,729.36-137,626.56-56,706.48

Finding the Fourth Proportional to 99,729.36, 137,626.56 and 56,706.48

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Solution

The fourth proportional to 99,729.36, 137,626.56 and 56,706.48 is: 78,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,729.36 : 137,626.56 = 56,706.48 : x
  2. Step 2: Convert to fraction form
    99,729.36/137,626.56 = 56,706.48/x
  3. Step 3: Cross multiply
    99,729.36x = 137,626.56 × 56,706.48
  4. Step 4: Simplify right side
    99,729.36x = 7,804,317,772.11
  5. Step 5: Solve for x
    x = 7,804,317,772.11/99,729.36
  6. Step 6: Final answer
    x = 78,254.97

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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.