Home / 61,387.11-84,656.48-56,805.39

Finding the Fourth Proportional to 61,387.11, 84,656.48 and 56,805.39

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Solution

The fourth proportional to 61,387.11, 84,656.48 and 56,805.39 is: 78,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,387.11 : 84,656.48 = 56,805.39 : x
  2. Step 2: Convert to fraction form
    61,387.11/84,656.48 = 56,805.39/x
  3. Step 3: Cross multiply
    61,387.11x = 84,656.48 × 56,805.39
  4. Step 4: Simplify right side
    61,387.11x = 4,808,944,078.40
  5. Step 5: Solve for x
    x = 4,808,944,078.40/61,387.11
  6. Step 6: Final answer
    x = 78,338.01

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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.