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Finding the Fourth Proportional to 75,045.93, 112,513 and 45,456.63

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Solution

The fourth proportional to 75,045.93, 112,513 and 45,456.63 is: 68,151.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,045.93 : 112,513 = 45,456.63 : x
  2. Step 2: Convert to fraction form
    75,045.93/112,513 = 45,456.63/x
  3. Step 3: Cross multiply
    75,045.93x = 112,513 × 45,456.63
  4. Step 4: Simplify right side
    75,045.93x = 5,114,461,811.19
  5. Step 5: Solve for x
    x = 5,114,461,811.19/75,045.93
  6. Step 6: Final answer
    x = 68,151.09

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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.