Home / 77,089.18-115,617.86-29,688

Finding the Fourth Proportional to 77,089.18, 115,617.86 and 29,688

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Solution

The fourth proportional to 77,089.18, 115,617.86 and 29,688 is: 44,525.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,089.18 : 115,617.86 = 29,688 : x
  2. Step 2: Convert to fraction form
    77,089.18/115,617.86 = 29,688/x
  3. Step 3: Cross multiply
    77,089.18x = 115,617.86 × 29,688
  4. Step 4: Simplify right side
    77,089.18x = 3,432,463,027.68
  5. Step 5: Solve for x
    x = 3,432,463,027.68/77,089.18
  6. Step 6: Final answer
    x = 44,525.87

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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.