Home / 42,665.70-63,998.55-28,668.90

Finding the Fourth Proportional to 42,665.70, 63,998.55 and 28,668.90

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Solution

The fourth proportional to 42,665.70, 63,998.55 and 28,668.90 is: 43,003.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,665.70 : 63,998.55 = 28,668.90 : x
  2. Step 2: Convert to fraction form
    42,665.70/63,998.55 = 28,668.90/x
  3. Step 3: Cross multiply
    42,665.70x = 63,998.55 × 28,668.90
  4. Step 4: Simplify right side
    42,665.70x = 1,834,768,030.10
  5. Step 5: Solve for x
    x = 1,834,768,030.10/42,665.70
  6. Step 6: Final answer
    x = 43,003.35

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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.