Home / 77,102.08-115,635.84-21,702.40

Finding the Fourth Proportional to 77,102.08, 115,635.84 and 21,702.40

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Solution

The fourth proportional to 77,102.08, 115,635.84 and 21,702.40 is: 32,548.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,102.08 : 115,635.84 = 21,702.40 : x
  2. Step 2: Convert to fraction form
    77,102.08/115,635.84 = 21,702.40/x
  3. Step 3: Cross multiply
    77,102.08x = 115,635.84 × 21,702.40
  4. Step 4: Simplify right side
    77,102.08x = 2,509,575,254.02
  5. Step 5: Solve for x
    x = 2,509,575,254.02/77,102.08
  6. Step 6: Final answer
    x = 32,548.74

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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.