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Finding the Fourth Proportional to 61,005.60, 91,362.60 and 49,341.60

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Solution

The fourth proportional to 61,005.60, 91,362.60 and 49,341.60 is: 73,894.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,005.60 : 91,362.60 = 49,341.60 : x
  2. Step 2: Convert to fraction form
    61,005.60/91,362.60 = 49,341.60/x
  3. Step 3: Cross multiply
    61,005.60x = 91,362.60 × 49,341.60
  4. Step 4: Simplify right side
    61,005.60x = 4,507,976,864.16
  5. Step 5: Solve for x
    x = 4,507,976,864.16/61,005.60
  6. Step 6: Final answer
    x = 73,894.48

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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.