Home / 91,970.15-126,919.26-53,731.89

Finding the Fourth Proportional to 91,970.15, 126,919.26 and 53,731.89

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Solution

The fourth proportional to 91,970.15, 126,919.26 and 53,731.89 is: 74,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,970.15 : 126,919.26 = 53,731.89 : x
  2. Step 2: Convert to fraction form
    91,970.15/126,919.26 = 53,731.89/x
  3. Step 3: Cross multiply
    91,970.15x = 126,919.26 × 53,731.89
  4. Step 4: Simplify right side
    91,970.15x = 6,819,611,717.20
  5. Step 5: Solve for x
    x = 6,819,611,717.20/91,970.15
  6. Step 6: Final answer
    x = 74,150.28

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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.