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Finding the Fourth Proportional to 56,775.89, 77,783.33 and 54,647.66

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Solution

The fourth proportional to 56,775.89, 77,783.33 and 54,647.66 is: 74,867.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,775.89 : 77,783.33 = 54,647.66 : x
  2. Step 2: Convert to fraction form
    56,775.89/77,783.33 = 54,647.66/x
  3. Step 3: Cross multiply
    56,775.89x = 77,783.33 × 54,647.66
  4. Step 4: Simplify right side
    56,775.89x = 4,250,677,264.16
  5. Step 5: Solve for x
    x = 4,250,677,264.16/56,775.89
  6. Step 6: Final answer
    x = 74,867.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.