Home / 77,089.10-115,720.05-59,636.30

Finding the Fourth Proportional to 77,089.10, 115,720.05 and 59,636.30

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Solution

The fourth proportional to 77,089.10, 115,720.05 and 59,636.30 is: 89,521.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,089.10 : 115,720.05 = 59,636.30 : x
  2. Step 2: Convert to fraction form
    77,089.10/115,720.05 = 59,636.30/x
  3. Step 3: Cross multiply
    77,089.10x = 115,720.05 × 59,636.30
  4. Step 4: Simplify right side
    77,089.10x = 6,901,115,617.82
  5. Step 5: Solve for x
    x = 6,901,115,617.82/77,089.10
  6. Step 6: Final answer
    x = 89,521.29

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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.