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Finding the Fourth Proportional to 92,885.60, 128,184.64 and 54,647.66

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Solution

The fourth proportional to 92,885.60, 128,184.64 and 54,647.66 is: 75,415.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,885.60 : 128,184.64 = 54,647.66 : x
  2. Step 2: Convert to fraction form
    92,885.60/128,184.64 = 54,647.66/x
  3. Step 3: Cross multiply
    92,885.60x = 128,184.64 × 54,647.66
  4. Step 4: Simplify right side
    92,885.60x = 7,004,989,846.40
  5. Step 5: Solve for x
    x = 7,004,989,846.40/92,885.60
  6. Step 6: Final answer
    x = 75,415.24

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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.