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Finding the Fourth Proportional to 72,599.16, 100,143.40 and 45,694.96

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Solution

The fourth proportional to 72,599.16, 100,143.40 and 45,694.96 is: 63,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,599.16 : 100,143.40 = 45,694.96 : x
  2. Step 2: Convert to fraction form
    72,599.16/100,143.40 = 45,694.96/x
  3. Step 3: Cross multiply
    72,599.16x = 100,143.40 × 45,694.96
  4. Step 4: Simplify right side
    72,599.16x = 4,576,048,657.26
  5. Step 5: Solve for x
    x = 4,576,048,657.26/72,599.16
  6. Step 6: Final answer
    x = 63,031.70

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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.