Home / 85,004.40-127,312.20-43,402.80

Finding the Fourth Proportional to 85,004.40, 127,312.20 and 43,402.80

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Solution

The fourth proportional to 85,004.40, 127,312.20 and 43,402.80 is: 65,004.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,004.40 : 127,312.20 = 43,402.80 : x
  2. Step 2: Convert to fraction form
    85,004.40/127,312.20 = 43,402.80/x
  3. Step 3: Cross multiply
    85,004.40x = 127,312.20 × 43,402.80
  4. Step 4: Simplify right side
    85,004.40x = 5,525,705,954.16
  5. Step 5: Solve for x
    x = 5,525,705,954.16/85,004.40
  6. Step 6: Final answer
    x = 65,004.94

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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.