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Finding the Fourth Proportional to 76,349.93, 105,363.53 and 42,360.65

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Solution

The fourth proportional to 76,349.93, 105,363.53 and 42,360.65 is: 58,458.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,349.93 : 105,363.53 = 42,360.65 : x
  2. Step 2: Convert to fraction form
    76,349.93/105,363.53 = 42,360.65/x
  3. Step 3: Cross multiply
    76,349.93x = 105,363.53 × 42,360.65
  4. Step 4: Simplify right side
    76,349.93x = 4,463,267,196.18
  5. Step 5: Solve for x
    x = 4,463,267,196.18/76,349.93
  6. Step 6: Final answer
    x = 58,458.04

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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.