Home / 56,776.17-78,416.78-38,839.71

Finding the Fourth Proportional to 56,776.17, 78,416.78 and 38,839.71

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Solution

The fourth proportional to 56,776.17, 78,416.78 and 38,839.71 is: 53,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,776.17 : 78,416.78 = 38,839.71 : x
  2. Step 2: Convert to fraction form
    56,776.17/78,416.78 = 38,839.71/x
  3. Step 3: Cross multiply
    56,776.17x = 78,416.78 × 38,839.71
  4. Step 4: Simplify right side
    56,776.17x = 3,045,684,800.14
  5. Step 5: Solve for x
    x = 3,045,684,800.14/56,776.17
  6. Step 6: Final answer
    x = 53,643.72

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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.