Home / 99,748.28-149,631.80-39,762.30

Finding the Fourth Proportional to 99,748.28, 149,631.80 and 39,762.30

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Solution

The fourth proportional to 99,748.28, 149,631.80 and 39,762.30 is: 59,647.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,748.28 : 149,631.80 = 39,762.30 : x
  2. Step 2: Convert to fraction form
    99,748.28/149,631.80 = 39,762.30/x
  3. Step 3: Cross multiply
    99,748.28x = 149,631.80 × 39,762.30
  4. Step 4: Simplify right side
    99,748.28x = 5,949,704,521.14
  5. Step 5: Solve for x
    x = 5,949,704,521.14/99,748.28
  6. Step 6: Final answer
    x = 59,647.19

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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.