Home / 65,345.09-90,142.97-42,697.32

Finding the Fourth Proportional to 65,345.09, 90,142.97 and 42,697.32

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Solution

The fourth proportional to 65,345.09, 90,142.97 and 42,697.32 is: 58,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,345.09 : 90,142.97 = 42,697.32 : x
  2. Step 2: Convert to fraction form
    65,345.09/90,142.97 = 42,697.32/x
  3. Step 3: Cross multiply
    65,345.09x = 90,142.97 × 42,697.32
  4. Step 4: Simplify right side
    65,345.09x = 3,848,863,022.35
  5. Step 5: Solve for x
    x = 3,848,863,022.35/65,345.09
  6. Step 6: Final answer
    x = 58,900.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.