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Finding the Fourth Proportional to 56,925.99, 85,398.17 and 21,390.08

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Solution

The fourth proportional to 56,925.99, 85,398.17 and 21,390.08 is: 32,088.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,925.99 : 85,398.17 = 21,390.08 : x
  2. Step 2: Convert to fraction form
    56,925.99/85,398.17 = 21,390.08/x
  3. Step 3: Cross multiply
    56,925.99x = 85,398.17 × 21,390.08
  4. Step 4: Simplify right side
    56,925.99x = 1,826,673,154.21
  5. Step 5: Solve for x
    x = 1,826,673,154.21/56,925.99
  6. Step 6: Final answer
    x = 32,088.56

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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.