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Finding the Fourth Proportional to 56,387.80, 84,495.30 and 53,277.40

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Solution

The fourth proportional to 56,387.80, 84,495.30 and 53,277.40 is: 79,834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,387.80 : 84,495.30 = 53,277.40 : x
  2. Step 2: Convert to fraction form
    56,387.80/84,495.30 = 53,277.40/x
  3. Step 3: Cross multiply
    56,387.80x = 84,495.30 × 53,277.40
  4. Step 4: Simplify right side
    56,387.80x = 4,501,689,896.22
  5. Step 5: Solve for x
    x = 4,501,689,896.22/56,387.80
  6. Step 6: Final answer
    x = 79,834.47

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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.