Home / 90,900.12-136,412.40-31,735.80

Finding the Fourth Proportional to 90,900.12, 136,412.40 and 31,735.80

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Solution

The fourth proportional to 90,900.12, 136,412.40 and 31,735.80 is: 47,625.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,900.12 : 136,412.40 = 31,735.80 : x
  2. Step 2: Convert to fraction form
    90,900.12/136,412.40 = 31,735.80/x
  3. Step 3: Cross multiply
    90,900.12x = 136,412.40 × 31,735.80
  4. Step 4: Simplify right side
    90,900.12x = 4,329,156,762.93
  5. Step 5: Solve for x
    x = 4,329,156,762.93/90,900.12
  6. Step 6: Final answer
    x = 47,625.42

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1.5x scale

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.