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Finding the Fourth Proportional to 72,070.68, 108,222.72 and 44,543.64

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Solution

The fourth proportional to 72,070.68, 108,222.72 and 44,543.64 is: 66,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,070.68 : 108,222.72 = 44,543.64 : x
  2. Step 2: Convert to fraction form
    72,070.68/108,222.72 = 44,543.64/x
  3. Step 3: Cross multiply
    72,070.68x = 108,222.72 × 44,543.64
  4. Step 4: Simplify right side
    72,070.68x = 4,820,633,879.50
  5. Step 5: Solve for x
    x = 4,820,633,879.50/72,070.68
  6. Step 6: Final answer
    x = 66,887.59

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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.