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Finding the Fourth Proportional to 72,349.65, 99,854.55 and 49,670.10

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Solution

The fourth proportional to 72,349.65, 99,854.55 and 49,670.10 is: 68,553.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,349.65 : 99,854.55 = 49,670.10 : x
  2. Step 2: Convert to fraction form
    72,349.65/99,854.55 = 49,670.10/x
  3. Step 3: Cross multiply
    72,349.65x = 99,854.55 × 49,670.10
  4. Step 4: Simplify right side
    72,349.65x = 4,959,785,483.96
  5. Step 5: Solve for x
    x = 4,959,785,483.96/72,349.65
  6. Step 6: Final answer
    x = 68,553.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.