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Finding the Fourth Proportional to 89,800.75, 134,701.80 and 39,867.40

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Solution

The fourth proportional to 89,800.75, 134,701.80 and 39,867.40 is: 59,801.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,800.75 : 134,701.80 = 39,867.40 : x
  2. Step 2: Convert to fraction form
    89,800.75/134,701.80 = 39,867.40/x
  3. Step 3: Cross multiply
    89,800.75x = 134,701.80 × 39,867.40
  4. Step 4: Simplify right side
    89,800.75x = 5,370,210,541.32
  5. Step 5: Solve for x
    x = 5,370,210,541.32/89,800.75
  6. Step 6: Final answer
    x = 59,801.40

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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.