Home / 90,379.02-135,566.40-31,209.12

Finding the Fourth Proportional to 90,379.02, 135,566.40 and 31,209.12

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Solution

The fourth proportional to 90,379.02, 135,566.40 and 31,209.12 is: 46,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,379.02 : 135,566.40 = 31,209.12 : x
  2. Step 2: Convert to fraction form
    90,379.02/135,566.40 = 31,209.12/x
  3. Step 3: Cross multiply
    90,379.02x = 135,566.40 × 31,209.12
  4. Step 4: Simplify right side
    90,379.02x = 4,230,908,045.57
  5. Step 5: Solve for x
    x = 4,230,908,045.57/90,379.02
  6. Step 6: Final answer
    x = 46,812.94

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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.