Home / 77,056.18-115,607.88-69,108.46

Finding the Fourth Proportional to 77,056.18, 115,607.88 and 69,108.46

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Solution

The fourth proportional to 77,056.18, 115,607.88 and 69,108.46 is: 103,683.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,056.18 : 115,607.88 = 69,108.46 : x
  2. Step 2: Convert to fraction form
    77,056.18/115,607.88 = 69,108.46/x
  3. Step 3: Cross multiply
    77,056.18x = 115,607.88 × 69,108.46
  4. Step 4: Simplify right side
    77,056.18x = 7,989,482,550.66
  5. Step 5: Solve for x
    x = 7,989,482,550.66/77,056.18
  6. Step 6: Final answer
    x = 103,683.86

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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.