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Finding the Fourth Proportional to 73,966.80, 102,075.04 and 40,432.80

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Solution

The fourth proportional to 73,966.80, 102,075.04 and 40,432.80 is: 55,797.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,966.80 : 102,075.04 = 40,432.80 : x
  2. Step 2: Convert to fraction form
    73,966.80/102,075.04 = 40,432.80/x
  3. Step 3: Cross multiply
    73,966.80x = 102,075.04 × 40,432.80
  4. Step 4: Simplify right side
    73,966.80x = 4,127,179,677.31
  5. Step 5: Solve for x
    x = 4,127,179,677.31/73,966.80
  6. Step 6: Final answer
    x = 55,797.73

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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.