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Finding the Fourth Proportional to 40,492.80, 60,707.52 and 19,710.72

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Solution

The fourth proportional to 40,492.80, 60,707.52 and 19,710.72 is: 29,550.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,492.80 : 60,707.52 = 19,710.72 : x
  2. Step 2: Convert to fraction form
    40,492.80/60,707.52 = 19,710.72/x
  3. Step 3: Cross multiply
    40,492.80x = 60,707.52 × 19,710.72
  4. Step 4: Simplify right side
    40,492.80x = 1,196,588,928.61
  5. Step 5: Solve for x
    x = 1,196,588,928.61/40,492.80
  6. Step 6: Final answer
    x = 29,550.66

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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.