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Finding the Fourth Proportional to 56,815.68, 78,404.04 and 35,606.64

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Solution

The fourth proportional to 56,815.68, 78,404.04 and 35,606.64 is: 49,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,815.68 : 78,404.04 = 35,606.64 : x
  2. Step 2: Convert to fraction form
    56,815.68/78,404.04 = 35,606.64/x
  3. Step 3: Cross multiply
    56,815.68x = 78,404.04 × 35,606.64
  4. Step 4: Simplify right side
    56,815.68x = 2,791,704,426.83
  5. Step 5: Solve for x
    x = 2,791,704,426.83/56,815.68
  6. Step 6: Final answer
    x = 49,136.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.