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Finding the Fourth Proportional to 56,807.79, 85,211.64 and 56,725.71

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Solution

The fourth proportional to 56,807.79, 85,211.64 and 56,725.71 is: 85,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,807.79 : 85,211.64 = 56,725.71 : x
  2. Step 2: Convert to fraction form
    56,807.79/85,211.64 = 56,725.71/x
  3. Step 3: Cross multiply
    56,807.79x = 85,211.64 × 56,725.71
  4. Step 4: Simplify right side
    56,807.79x = 4,833,690,779.26
  5. Step 5: Solve for x
    x = 4,833,690,779.26/56,807.79
  6. Step 6: Final answer
    x = 85,088.52

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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.