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Finding the Fourth Proportional to 92,859.54, 128,176.68 and 54,617.40

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Solution

The fourth proportional to 92,859.54, 128,176.68 and 54,617.40 is: 75,389.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,859.54 : 128,176.68 = 54,617.40 : x
  2. Step 2: Convert to fraction form
    92,859.54/128,176.68 = 54,617.40/x
  3. Step 3: Cross multiply
    92,859.54x = 128,176.68 × 54,617.40
  4. Step 4: Simplify right side
    92,859.54x = 7,000,677,002.23
  5. Step 5: Solve for x
    x = 7,000,677,002.23/92,859.54
  6. Step 6: Final answer
    x = 75,389.96

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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.