Home / 52,455.40-78,722.28-30,239.12

Finding the Fourth Proportional to 52,455.40, 78,722.28 and 30,239.12

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Solution

The fourth proportional to 52,455.40, 78,722.28 and 30,239.12 is: 45,381.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,455.40 : 78,722.28 = 30,239.12 : x
  2. Step 2: Convert to fraction form
    52,455.40/78,722.28 = 30,239.12/x
  3. Step 3: Cross multiply
    52,455.40x = 78,722.28 × 30,239.12
  4. Step 4: Simplify right side
    52,455.40x = 2,380,492,668.40
  5. Step 5: Solve for x
    x = 2,380,492,668.40/52,455.40
  6. Step 6: Final answer
    x = 45,381.27

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1.5x scale

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.