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Finding the Fourth Proportional to 85,373.94, 128,075.94 and 29,200.86

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Solution

The fourth proportional to 85,373.94, 128,075.94 and 29,200.86 is: 43,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,373.94 : 128,075.94 = 29,200.86 : x
  2. Step 2: Convert to fraction form
    85,373.94/128,075.94 = 29,200.86/x
  3. Step 3: Cross multiply
    85,373.94x = 128,075.94 × 29,200.86
  4. Step 4: Simplify right side
    85,373.94x = 3,739,927,593.31
  5. Step 5: Solve for x
    x = 3,739,927,593.31/85,373.94
  6. Step 6: Final answer
    x = 43,806.43

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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.