Home / 90,079.44-135,126.18-52,643.40

Finding the Fourth Proportional to 90,079.44, 135,126.18 and 52,643.40

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Solution

The fourth proportional to 90,079.44, 135,126.18 and 52,643.40 is: 78,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,079.44 : 135,126.18 = 52,643.40 : x
  2. Step 2: Convert to fraction form
    90,079.44/135,126.18 = 52,643.40/x
  3. Step 3: Cross multiply
    90,079.44x = 135,126.18 × 52,643.40
  4. Step 4: Simplify right side
    90,079.44x = 7,113,501,544.21
  5. Step 5: Solve for x
    x = 7,113,501,544.21/90,079.44
  6. Step 6: Final answer
    x = 78,969.20

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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.