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Finding the Fourth Proportional to 61,290.48, 91,950.48 and 21,303.66

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Solution

The fourth proportional to 61,290.48, 91,950.48 and 21,303.66 is: 31,960.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,290.48 : 91,950.48 = 21,303.66 : x
  2. Step 2: Convert to fraction form
    61,290.48/91,950.48 = 21,303.66/x
  3. Step 3: Cross multiply
    61,290.48x = 91,950.48 × 21,303.66
  4. Step 4: Simplify right side
    61,290.48x = 1,958,881,762.76
  5. Step 5: Solve for x
    x = 1,958,881,762.76/61,290.48
  6. Step 6: Final answer
    x = 31,960.62

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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.