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Finding the Fourth Proportional to 72,851.70, 100,219.28 and 59,393.45

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Solution

The fourth proportional to 72,851.70, 100,219.28 and 59,393.45 is: 81,705.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,851.70 : 100,219.28 = 59,393.45 : x
  2. Step 2: Convert to fraction form
    72,851.70/100,219.28 = 59,393.45/x
  3. Step 3: Cross multiply
    72,851.70x = 100,219.28 × 59,393.45
  4. Step 4: Simplify right side
    72,851.70x = 5,952,368,749.30
  5. Step 5: Solve for x
    x = 5,952,368,749.30/72,851.70
  6. Step 6: Final answer
    x = 81,705.28

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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.