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Finding the Fourth Proportional to 75,289.68, 112,953.72 and 28,543.44

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Solution

The fourth proportional to 75,289.68, 112,953.72 and 28,543.44 is: 42,822.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,289.68 : 112,953.72 = 28,543.44 : x
  2. Step 2: Convert to fraction form
    75,289.68/112,953.72 = 28,543.44/x
  3. Step 3: Cross multiply
    75,289.68x = 112,953.72 × 28,543.44
  4. Step 4: Simplify right side
    75,289.68x = 3,224,087,729.60
  5. Step 5: Solve for x
    x = 3,224,087,729.60/75,289.68
  6. Step 6: Final answer
    x = 42,822.44

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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.