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Finding the Fourth Proportional to 56,869.83, 78,482.69 and 31,379.13

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Solution

The fourth proportional to 56,869.83, 78,482.69 and 31,379.13 is: 43,304.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,869.83 : 78,482.69 = 31,379.13 : x
  2. Step 2: Convert to fraction form
    56,869.83/78,482.69 = 31,379.13/x
  3. Step 3: Cross multiply
    56,869.83x = 78,482.69 × 31,379.13
  4. Step 4: Simplify right side
    56,869.83x = 2,462,718,375.36
  5. Step 5: Solve for x
    x = 2,462,718,375.36/56,869.83
  6. Step 6: Final answer
    x = 43,304.48

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1.5x scale

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.