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Finding the Fourth Proportional to 42,570.99, 63,861.78 and 14,488.89

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Solution

The fourth proportional to 42,570.99, 63,861.78 and 14,488.89 is: 21,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,570.99 : 63,861.78 = 14,488.89 : x
  2. Step 2: Convert to fraction form
    42,570.99/63,861.78 = 14,488.89/x
  3. Step 3: Cross multiply
    42,570.99x = 63,861.78 × 14,488.89
  4. Step 4: Simplify right side
    42,570.99x = 925,286,305.62
  5. Step 5: Solve for x
    x = 925,286,305.62/42,570.99
  6. Step 6: Final answer
    x = 21,735.14

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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.