Home / 77,904.94-116,966.22-39,980.74

Finding the Fourth Proportional to 77,904.94, 116,966.22 and 39,980.74

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Solution

The fourth proportional to 77,904.94, 116,966.22 and 39,980.74 is: 60,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,904.94 : 116,966.22 = 39,980.74 : x
  2. Step 2: Convert to fraction form
    77,904.94/116,966.22 = 39,980.74/x
  3. Step 3: Cross multiply
    77,904.94x = 116,966.22 × 39,980.74
  4. Step 4: Simplify right side
    77,904.94x = 4,676,396,030.60
  5. Step 5: Solve for x
    x = 4,676,396,030.60/77,904.94
  6. Step 6: Final answer
    x = 60,026.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.