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Finding the Fourth Proportional to 92,929.72, 128,232.72 and 51,535.68

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Solution

The fourth proportional to 92,929.72, 128,232.72 and 51,535.68 is: 71,113.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,929.72 : 128,232.72 = 51,535.68 : x
  2. Step 2: Convert to fraction form
    92,929.72/128,232.72 = 51,535.68/x
  3. Step 3: Cross multiply
    92,929.72x = 128,232.72 × 51,535.68
  4. Step 4: Simplify right side
    92,929.72x = 6,608,560,423.45
  5. Step 5: Solve for x
    x = 6,608,560,423.45/92,929.72
  6. Step 6: Final answer
    x = 71,113.53

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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.