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Finding the Fourth Proportional to 65,903.04, 90,942.59 and 39,048.02

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Solution

The fourth proportional to 65,903.04, 90,942.59 and 39,048.02 is: 53,884.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,903.04 : 90,942.59 = 39,048.02 : x
  2. Step 2: Convert to fraction form
    65,903.04/90,942.59 = 39,048.02/x
  3. Step 3: Cross multiply
    65,903.04x = 90,942.59 × 39,048.02
  4. Step 4: Simplify right side
    65,903.04x = 3,551,128,073.17
  5. Step 5: Solve for x
    x = 3,551,128,073.17/65,903.04
  6. Step 6: Final answer
    x = 53,884.13

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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.