Home / 74,624.20-111,936.30-66,459.40

Finding the Fourth Proportional to 74,624.20, 111,936.30 and 66,459.40

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Solution

The fourth proportional to 74,624.20, 111,936.30 and 66,459.40 is: 99,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,624.20 : 111,936.30 = 66,459.40 : x
  2. Step 2: Convert to fraction form
    74,624.20/111,936.30 = 66,459.40/x
  3. Step 3: Cross multiply
    74,624.20x = 111,936.30 × 66,459.40
  4. Step 4: Simplify right side
    74,624.20x = 7,439,219,336.22
  5. Step 5: Solve for x
    x = 7,439,219,336.22/74,624.20
  6. Step 6: Final answer
    x = 99,689.10

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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.