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Finding the Fourth Proportional to 72,818.52, 108,656.64 and 68,360.28

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Solution

The fourth proportional to 72,818.52, 108,656.64 and 68,360.28 is: 102,004.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,818.52 : 108,656.64 = 68,360.28 : x
  2. Step 2: Convert to fraction form
    72,818.52/108,656.64 = 68,360.28/x
  3. Step 3: Cross multiply
    72,818.52x = 108,656.64 × 68,360.28
  4. Step 4: Simplify right side
    72,818.52x = 7,427,798,334.26
  5. Step 5: Solve for x
    x = 7,427,798,334.26/72,818.52
  6. Step 6: Final answer
    x = 102,004.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.