Home / 74,779.19-103,196.51-40,787.67

Finding the Fourth Proportional to 74,779.19, 103,196.51 and 40,787.67

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Solution

The fourth proportional to 74,779.19, 103,196.51 and 40,787.67 is: 56,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,779.19 : 103,196.51 = 40,787.67 : x
  2. Step 2: Convert to fraction form
    74,779.19/103,196.51 = 40,787.67/x
  3. Step 3: Cross multiply
    74,779.19x = 103,196.51 × 40,787.67
  4. Step 4: Simplify right side
    74,779.19x = 4,209,145,531.03
  5. Step 5: Solve for x
    x = 4,209,145,531.03/74,779.19
  6. Step 6: Final answer
    x = 56,287.66

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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.