Home / 91,600.21-137,409-28,421.02

Finding the Fourth Proportional to 91,600.21, 137,409 and 28,421.02

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Solution

The fourth proportional to 91,600.21, 137,409 and 28,421.02 is: 42,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,600.21 : 137,409 = 28,421.02 : x
  2. Step 2: Convert to fraction form
    91,600.21/137,409 = 28,421.02/x
  3. Step 3: Cross multiply
    91,600.21x = 137,409 × 28,421.02
  4. Step 4: Simplify right side
    91,600.21x = 3,905,303,937.18
  5. Step 5: Solve for x
    x = 3,905,303,937.18/91,600.21
  6. Step 6: Final answer
    x = 42,634.22

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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.