Home / 74,985.15-112,435.20-30,559.89

Finding the Fourth Proportional to 74,985.15, 112,435.20 and 30,559.89

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Solution

The fourth proportional to 74,985.15, 112,435.20 and 30,559.89 is: 45,822.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,985.15 : 112,435.20 = 30,559.89 : x
  2. Step 2: Convert to fraction form
    74,985.15/112,435.20 = 30,559.89/x
  3. Step 3: Cross multiply
    74,985.15x = 112,435.20 × 30,559.89
  4. Step 4: Simplify right side
    74,985.15x = 3,436,007,344.13
  5. Step 5: Solve for x
    x = 3,436,007,344.13/74,985.15
  6. Step 6: Final answer
    x = 45,822.50

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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.