Home / 78,826.76-108,772.02-45,303.56

Finding the Fourth Proportional to 78,826.76, 108,772.02 and 45,303.56

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Solution

The fourth proportional to 78,826.76, 108,772.02 and 45,303.56 is: 62,513.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,826.76 : 108,772.02 = 45,303.56 : x
  2. Step 2: Convert to fraction form
    78,826.76/108,772.02 = 45,303.56/x
  3. Step 3: Cross multiply
    78,826.76x = 108,772.02 × 45,303.56
  4. Step 4: Simplify right side
    78,826.76x = 4,927,759,734.39
  5. Step 5: Solve for x
    x = 4,927,759,734.39/78,826.76
  6. Step 6: Final answer
    x = 62,513.79

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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.