Home / 89,428.80-134,143.20-53,999.40

Finding the Fourth Proportional to 89,428.80, 134,143.20 and 53,999.40

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Solution

The fourth proportional to 89,428.80, 134,143.20 and 53,999.40 is: 80,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,428.80 : 134,143.20 = 53,999.40 : x
  2. Step 2: Convert to fraction form
    89,428.80/134,143.20 = 53,999.40/x
  3. Step 3: Cross multiply
    89,428.80x = 134,143.20 × 53,999.40
  4. Step 4: Simplify right side
    89,428.80x = 7,243,652,314.08
  5. Step 5: Solve for x
    x = 7,243,652,314.08/89,428.80
  6. Step 6: Final answer
    x = 80,999.10

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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.