Home / 74,980.08-103,471.65-40,987.98

Finding the Fourth Proportional to 74,980.08, 103,471.65 and 40,987.98

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Solution

The fourth proportional to 74,980.08, 103,471.65 and 40,987.98 is: 56,562.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,980.08 : 103,471.65 = 40,987.98 : x
  2. Step 2: Convert to fraction form
    74,980.08/103,471.65 = 40,987.98/x
  3. Step 3: Cross multiply
    74,980.08x = 103,471.65 × 40,987.98
  4. Step 4: Simplify right side
    74,980.08x = 4,241,093,920.77
  5. Step 5: Solve for x
    x = 4,241,093,920.77/74,980.08
  6. Step 6: Final answer
    x = 56,562.94

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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.