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Finding the Fourth Proportional to 84,888.86, 127,313.53 and 31,605.95

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Solution

The fourth proportional to 84,888.86, 127,313.53 and 31,605.95 is: 47,401.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,888.86 : 127,313.53 = 31,605.95 : x
  2. Step 2: Convert to fraction form
    84,888.86/127,313.53 = 31,605.95/x
  3. Step 3: Cross multiply
    84,888.86x = 127,313.53 × 31,605.95
  4. Step 4: Simplify right side
    84,888.86x = 4,023,865,302.77
  5. Step 5: Solve for x
    x = 4,023,865,302.77/84,888.86
  6. Step 6: Final answer
    x = 47,401.57

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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.