Home / 78,518.95-117,779.13-22,359.01

Finding the Fourth Proportional to 78,518.95, 117,779.13 and 22,359.01

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Solution

The fourth proportional to 78,518.95, 117,779.13 and 22,359.01 is: 33,538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,518.95 : 117,779.13 = 22,359.01 : x
  2. Step 2: Convert to fraction form
    78,518.95/117,779.13 = 22,359.01/x
  3. Step 3: Cross multiply
    78,518.95x = 117,779.13 × 22,359.01
  4. Step 4: Simplify right side
    78,518.95x = 2,633,424,745.46
  5. Step 5: Solve for x
    x = 2,633,424,745.46/78,518.95
  6. Step 6: Final answer
    x = 33,538.72

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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.