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Finding the Fourth Proportional to 115,045.72, 172,423.18 and 51,798.49

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Solution

The fourth proportional to 115,045.72, 172,423.18 and 51,798.49 is: 77,632.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,045.72 : 172,423.18 = 51,798.49 : x
  2. Step 2: Convert to fraction form
    115,045.72/172,423.18 = 51,798.49/x
  3. Step 3: Cross multiply
    115,045.72x = 172,423.18 × 51,798.49
  4. Step 4: Simplify right side
    115,045.72x = 8,931,260,365.00
  5. Step 5: Solve for x
    x = 8,931,260,365.00/115,045.72
  6. Step 6: Final answer
    x = 77,632.27

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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.