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Finding the Fourth Proportional to 42,992.77, 64,481.85 and 19,613.74

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Solution

The fourth proportional to 42,992.77, 64,481.85 and 19,613.74 is: 29,417.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,992.77 : 64,481.85 = 19,613.74 : x
  2. Step 2: Convert to fraction form
    42,992.77/64,481.85 = 19,613.74/x
  3. Step 3: Cross multiply
    42,992.77x = 64,481.85 × 19,613.74
  4. Step 4: Simplify right side
    42,992.77x = 1,264,730,240.62
  5. Step 5: Solve for x
    x = 1,264,730,240.62/42,992.77
  6. Step 6: Final answer
    x = 29,417.28

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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.