Home / 78,660.80-108,690.08-62,875.52

Finding the Fourth Proportional to 78,660.80, 108,690.08 and 62,875.52

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Solution

The fourth proportional to 78,660.80, 108,690.08 and 62,875.52 is: 86,878.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,660.80 : 108,690.08 = 62,875.52 : x
  2. Step 2: Convert to fraction form
    78,660.80/108,690.08 = 62,875.52/x
  3. Step 3: Cross multiply
    78,660.80x = 108,690.08 × 62,875.52
  4. Step 4: Simplify right side
    78,660.80x = 6,833,945,298.84
  5. Step 5: Solve for x
    x = 6,833,945,298.84/78,660.80
  6. Step 6: Final answer
    x = 86,878.67

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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.