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Finding the Fourth Proportional to 42,501, 63,751.47 and 20,246.94

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Solution

The fourth proportional to 42,501, 63,751.47 and 20,246.94 is: 30,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,501 : 63,751.47 = 20,246.94 : x
  2. Step 2: Convert to fraction form
    42,501/63,751.47 = 20,246.94/x
  3. Step 3: Cross multiply
    42,501x = 63,751.47 × 20,246.94
  4. Step 4: Simplify right side
    42,501x = 1,290,772,188.00
  5. Step 5: Solve for x
    x = 1,290,772,188.00/42,501
  6. Step 6: Final answer
    x = 30,370.40

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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.