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Finding the Fourth Proportional to 72,927.76, 109,347.84 and 28,501.57

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Solution

The fourth proportional to 72,927.76, 109,347.84 and 28,501.57 is: 42,735.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,927.76 : 109,347.84 = 28,501.57 : x
  2. Step 2: Convert to fraction form
    72,927.76/109,347.84 = 28,501.57/x
  3. Step 3: Cross multiply
    72,927.76x = 109,347.84 × 28,501.57
  4. Step 4: Simplify right side
    72,927.76x = 3,116,585,116.11
  5. Step 5: Solve for x
    x = 3,116,585,116.11/72,927.76
  6. Step 6: Final answer
    x = 42,735.24

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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.