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Finding the Fourth Proportional to 72,624.94, 100,216.02 and 40,357.50

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Solution

The fourth proportional to 72,624.94, 100,216.02 and 40,357.50 is: 55,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,624.94 : 100,216.02 = 40,357.50 : x
  2. Step 2: Convert to fraction form
    72,624.94/100,216.02 = 40,357.50/x
  3. Step 3: Cross multiply
    72,624.94x = 100,216.02 × 40,357.50
  4. Step 4: Simplify right side
    72,624.94x = 4,044,468,027.15
  5. Step 5: Solve for x
    x = 4,044,468,027.15/72,624.94
  6. Step 6: Final answer
    x = 55,689.80

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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.