Home / 90,549.16-135,740.58-31,343.41

Finding the Fourth Proportional to 90,549.16, 135,740.58 and 31,343.41

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Solution

The fourth proportional to 90,549.16, 135,740.58 and 31,343.41 is: 46,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,549.16 : 135,740.58 = 31,343.41 : x
  2. Step 2: Convert to fraction form
    90,549.16/135,740.58 = 31,343.41/x
  3. Step 3: Cross multiply
    90,549.16x = 135,740.58 × 31,343.41
  4. Step 4: Simplify right side
    90,549.16x = 4,254,572,652.58
  5. Step 5: Solve for x
    x = 4,254,572,652.58/90,549.16
  6. Step 6: Final answer
    x = 46,986.33

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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.