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Finding the Fourth Proportional to 80,798, 111,509.88 and 47,292.08

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Solution

The fourth proportional to 80,798, 111,509.88 and 47,292.08 is: 65,268.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,798 : 111,509.88 = 47,292.08 : x
  2. Step 2: Convert to fraction form
    80,798/111,509.88 = 47,292.08/x
  3. Step 3: Cross multiply
    80,798x = 111,509.88 × 47,292.08
  4. Step 4: Simplify right side
    80,798x = 5,273,534,165.75
  5. Step 5: Solve for x
    x = 5,273,534,165.75/80,798
  6. Step 6: Final answer
    x = 65,268.13

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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.