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Finding the Fourth Proportional to 74,513.68, 102,820.26 and 42,680.68

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Solution

The fourth proportional to 74,513.68, 102,820.26 and 42,680.68 is: 58,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,513.68 : 102,820.26 = 42,680.68 : x
  2. Step 2: Convert to fraction form
    74,513.68/102,820.26 = 42,680.68/x
  3. Step 3: Cross multiply
    74,513.68x = 102,820.26 × 42,680.68
  4. Step 4: Simplify right side
    74,513.68x = 4,388,438,614.58
  5. Step 5: Solve for x
    x = 4,388,438,614.58/74,513.68
  6. Step 6: Final answer
    x = 58,894.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.