Home / 83,880.12-125,841.96-31,290

Finding the Fourth Proportional to 83,880.12, 125,841.96 and 31,290

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Solution

The fourth proportional to 83,880.12, 125,841.96 and 31,290 is: 46,943.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,880.12 : 125,841.96 = 31,290 : x
  2. Step 2: Convert to fraction form
    83,880.12/125,841.96 = 31,290/x
  3. Step 3: Cross multiply
    83,880.12x = 125,841.96 × 31,290
  4. Step 4: Simplify right side
    83,880.12x = 3,937,594,928.40
  5. Step 5: Solve for x
    x = 3,937,594,928.40/83,880.12
  6. Step 6: Final answer
    x = 46,943.12

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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.