Home / 99,431.42-137,184.46-56,403.82

Finding the Fourth Proportional to 99,431.42, 137,184.46 and 56,403.82

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Solution

The fourth proportional to 99,431.42, 137,184.46 and 56,403.82 is: 77,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,431.42 : 137,184.46 = 56,403.82 : x
  2. Step 2: Convert to fraction form
    99,431.42/137,184.46 = 56,403.82/x
  3. Step 3: Cross multiply
    99,431.42x = 137,184.46 × 56,403.82
  4. Step 4: Simplify right side
    99,431.42x = 7,737,727,588.64
  5. Step 5: Solve for x
    x = 7,737,727,588.64/99,431.42
  6. Step 6: Final answer
    x = 77,819.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.