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Finding the Fourth Proportional to 42,341.08, 63,540.78 and 14,639.08

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Solution

The fourth proportional to 42,341.08, 63,540.78 and 14,639.08 is: 21,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,341.08 : 63,540.78 = 14,639.08 : x
  2. Step 2: Convert to fraction form
    42,341.08/63,540.78 = 14,639.08/x
  3. Step 3: Cross multiply
    42,341.08x = 63,540.78 × 14,639.08
  4. Step 4: Simplify right side
    42,341.08x = 930,178,561.68
  5. Step 5: Solve for x
    x = 930,178,561.68/42,341.08
  6. Step 6: Final answer
    x = 21,968.70

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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.