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Finding the Fourth Proportional to 72,672.93, 100,223.94 and 47,154.93

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Solution

The fourth proportional to 72,672.93, 100,223.94 and 47,154.93 is: 65,031.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,672.93 : 100,223.94 = 47,154.93 : x
  2. Step 2: Convert to fraction form
    72,672.93/100,223.94 = 47,154.93/x
  3. Step 3: Cross multiply
    72,672.93x = 100,223.94 × 47,154.93
  4. Step 4: Simplify right side
    72,672.93x = 4,726,052,875.02
  5. Step 5: Solve for x
    x = 4,726,052,875.02/72,672.93
  6. Step 6: Final answer
    x = 65,031.82

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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.