Home / 91,087.40-136,565.48-61,431.68

Finding the Fourth Proportional to 91,087.40, 136,565.48 and 61,431.68

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Solution

The fourth proportional to 91,087.40, 136,565.48 and 61,431.68 is: 92,103.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,087.40 : 136,565.48 = 61,431.68 : x
  2. Step 2: Convert to fraction form
    91,087.40/136,565.48 = 61,431.68/x
  3. Step 3: Cross multiply
    91,087.40x = 136,565.48 × 61,431.68
  4. Step 4: Simplify right side
    91,087.40x = 8,389,446,866.41
  5. Step 5: Solve for x
    x = 8,389,446,866.41/91,087.40
  6. Step 6: Final answer
    x = 92,103.26

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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.