Home / 77,402.45-106,816.53-45,136.18

Finding the Fourth Proportional to 77,402.45, 106,816.53 and 45,136.18

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Solution

The fourth proportional to 77,402.45, 106,816.53 and 45,136.18 is: 62,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,402.45 : 106,816.53 = 45,136.18 : x
  2. Step 2: Convert to fraction form
    77,402.45/106,816.53 = 45,136.18/x
  3. Step 3: Cross multiply
    77,402.45x = 106,816.53 × 45,136.18
  4. Step 4: Simplify right side
    77,402.45x = 4,821,289,703.81
  5. Step 5: Solve for x
    x = 4,821,289,703.81/77,402.45
  6. Step 6: Final answer
    x = 62,288.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.