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Finding the Fourth Proportional to 91,804.80, 137,599.20 and 52,399.20

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Solution

The fourth proportional to 91,804.80, 137,599.20 and 52,399.20 is: 78,537.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,804.80 : 137,599.20 = 52,399.20 : x
  2. Step 2: Convert to fraction form
    91,804.80/137,599.20 = 52,399.20/x
  3. Step 3: Cross multiply
    91,804.80x = 137,599.20 × 52,399.20
  4. Step 4: Simplify right side
    91,804.80x = 7,210,088,000.64
  5. Step 5: Solve for x
    x = 7,210,088,000.64/91,804.80
  6. Step 6: Final answer
    x = 78,537.16

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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.