Home / 66,403.13-99,624.15-21,423.58

Finding the Fourth Proportional to 66,403.13, 99,624.15 and 21,423.58

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Solution

The fourth proportional to 66,403.13, 99,624.15 and 21,423.58 is: 32,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,403.13 : 99,624.15 = 21,423.58 : x
  2. Step 2: Convert to fraction form
    66,403.13/99,624.15 = 21,423.58/x
  3. Step 3: Cross multiply
    66,403.13x = 99,624.15 × 21,423.58
  4. Step 4: Simplify right side
    66,403.13x = 2,134,305,698.40
  5. Step 5: Solve for x
    x = 2,134,305,698.40/66,403.13
  6. Step 6: Final answer
    x = 32,141.65

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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.