Home / 91,006.10-136,472.70-31,811.30

Finding the Fourth Proportional to 91,006.10, 136,472.70 and 31,811.30

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Solution

The fourth proportional to 91,006.10, 136,472.70 and 31,811.30 is: 47,704.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,006.10 : 136,472.70 = 31,811.30 : x
  2. Step 2: Convert to fraction form
    91,006.10/136,472.70 = 31,811.30/x
  3. Step 3: Cross multiply
    91,006.10x = 136,472.70 × 31,811.30
  4. Step 4: Simplify right side
    91,006.10x = 4,341,374,001.51
  5. Step 5: Solve for x
    x = 4,341,374,001.51/91,006.10
  6. Step 6: Final answer
    x = 47,704.21

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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.