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Finding the Fourth Proportional to 58,454.48, 87,689.48 and 18,998.30

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Solution

The fourth proportional to 58,454.48, 87,689.48 and 18,998.30 is: 28,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,454.48 : 87,689.48 = 18,998.30 : x
  2. Step 2: Convert to fraction form
    58,454.48/87,689.48 = 18,998.30/x
  3. Step 3: Cross multiply
    58,454.48x = 87,689.48 × 18,998.30
  4. Step 4: Simplify right side
    58,454.48x = 1,665,950,514.45
  5. Step 5: Solve for x
    x = 1,665,950,514.45/58,454.48
  6. Step 6: Final answer
    x = 28,499.97

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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.