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Finding the Fourth Proportional to 67,482.40, 101,314.80 and 39,431.20

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Solution

The fourth proportional to 67,482.40, 101,314.80 and 39,431.20 is: 59,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,482.40 : 101,314.80 = 39,431.20 : x
  2. Step 2: Convert to fraction form
    67,482.40/101,314.80 = 39,431.20/x
  3. Step 3: Cross multiply
    67,482.40x = 101,314.80 × 39,431.20
  4. Step 4: Simplify right side
    67,482.40x = 3,994,964,141.76
  5. Step 5: Solve for x
    x = 3,994,964,141.76/67,482.40
  6. Step 6: Final answer
    x = 59,200.09

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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.