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Finding the Fourth Proportional to 72,015.76, 99,328.08 and 52,889.64

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Solution

The fourth proportional to 72,015.76, 99,328.08 and 52,889.64 is: 72,948.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,015.76 : 99,328.08 = 52,889.64 : x
  2. Step 2: Convert to fraction form
    72,015.76/99,328.08 = 52,889.64/x
  3. Step 3: Cross multiply
    72,015.76x = 99,328.08 × 52,889.64
  4. Step 4: Simplify right side
    72,015.76x = 5,253,426,393.09
  5. Step 5: Solve for x
    x = 5,253,426,393.09/72,015.76
  6. Step 6: Final answer
    x = 72,948.29

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1.5x scale

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.