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Finding the Fourth Proportional to 65,103.57, 89,880.57 and 43,316.95

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Solution

The fourth proportional to 65,103.57, 89,880.57 and 43,316.95 is: 59,802.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,103.57 : 89,880.57 = 43,316.95 : x
  2. Step 2: Convert to fraction form
    65,103.57/89,880.57 = 43,316.95/x
  3. Step 3: Cross multiply
    65,103.57x = 89,880.57 × 43,316.95
  4. Step 4: Simplify right side
    65,103.57x = 3,893,352,536.02
  5. Step 5: Solve for x
    x = 3,893,352,536.02/65,103.57
  6. Step 6: Final answer
    x = 59,802.44

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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.