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Finding the Fourth Proportional to 56,387.61, 77,779.71 and 36,270.72

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Solution

The fourth proportional to 56,387.61, 77,779.71 and 36,270.72 is: 50,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,387.61 : 77,779.71 = 36,270.72 : x
  2. Step 2: Convert to fraction form
    56,387.61/77,779.71 = 36,270.72/x
  3. Step 3: Cross multiply
    56,387.61x = 77,779.71 × 36,270.72
  4. Step 4: Simplify right side
    56,387.61x = 2,821,126,083.09
  5. Step 5: Solve for x
    x = 2,821,126,083.09/56,387.61
  6. Step 6: Final answer
    x = 50,030.96

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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.