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Finding the Fourth Proportional to 72,509.70, 108,720.81 and 32,521.41

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Solution

The fourth proportional to 72,509.70, 108,720.81 and 32,521.41 is: 48,762.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,509.70 : 108,720.81 = 32,521.41 : x
  2. Step 2: Convert to fraction form
    72,509.70/108,720.81 = 32,521.41/x
  3. Step 3: Cross multiply
    72,509.70x = 108,720.81 × 32,521.41
  4. Step 4: Simplify right side
    72,509.70x = 3,535,754,037.54
  5. Step 5: Solve for x
    x = 3,535,754,037.54/72,509.70
  6. Step 6: Final answer
    x = 48,762.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.