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Finding the Fourth Proportional to 56,775.62, 78,356.53 and 31,284.62

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Solution

The fourth proportional to 56,775.62, 78,356.53 and 31,284.62 is: 43,176.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,775.62 : 78,356.53 = 31,284.62 : x
  2. Step 2: Convert to fraction form
    56,775.62/78,356.53 = 31,284.62/x
  3. Step 3: Cross multiply
    56,775.62x = 78,356.53 × 31,284.62
  4. Step 4: Simplify right side
    56,775.62x = 2,451,354,265.57
  5. Step 5: Solve for x
    x = 2,451,354,265.57/56,775.62
  6. Step 6: Final answer
    x = 43,176.18

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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.