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Finding the Fourth Proportional to 40,703.40, 61,065.90 and 14,405.40

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Solution

The fourth proportional to 40,703.40, 61,065.90 and 14,405.40 is: 21,611.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,703.40 : 61,065.90 = 14,405.40 : x
  2. Step 2: Convert to fraction form
    40,703.40/61,065.90 = 14,405.40/x
  3. Step 3: Cross multiply
    40,703.40x = 61,065.90 × 14,405.40
  4. Step 4: Simplify right side
    40,703.40x = 879,678,715.86
  5. Step 5: Solve for x
    x = 879,678,715.86/40,703.40
  6. Step 6: Final answer
    x = 21,611.92

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1.5x scale

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.