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Finding the Fourth Proportional to 172,030.10, 258,045.15 and 45,670.10

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Solution

The fourth proportional to 172,030.10, 258,045.15 and 45,670.10 is: 68,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,030.10 : 258,045.15 = 45,670.10 : x
  2. Step 2: Convert to fraction form
    172,030.10/258,045.15 = 45,670.10/x
  3. Step 3: Cross multiply
    172,030.10x = 258,045.15 × 45,670.10
  4. Step 4: Simplify right side
    172,030.10x = 11,784,947,805.02
  5. Step 5: Solve for x
    x = 11,784,947,805.02/172,030.10
  6. Step 6: Final answer
    x = 68,505.15

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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.