Home / 91,720.32-137,592.72-36,303.36

Finding the Fourth Proportional to 91,720.32, 137,592.72 and 36,303.36

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Solution

The fourth proportional to 91,720.32, 137,592.72 and 36,303.36 is: 54,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.32 : 137,592.72 = 36,303.36 : x
  2. Step 2: Convert to fraction form
    91,720.32/137,592.72 = 36,303.36/x
  3. Step 3: Cross multiply
    91,720.32x = 137,592.72 × 36,303.36
  4. Step 4: Simplify right side
    91,720.32x = 4,995,078,047.54
  5. Step 5: Solve for x
    x = 4,995,078,047.54/91,720.32
  6. Step 6: Final answer
    x = 54,459.88

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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.