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Finding the Fourth Proportional to 92,772.78, 128,023.90 and 51,378.34

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Solution

The fourth proportional to 92,772.78, 128,023.90 and 51,378.34 is: 70,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,772.78 : 128,023.90 = 51,378.34 : x
  2. Step 2: Convert to fraction form
    92,772.78/128,023.90 = 51,378.34/x
  3. Step 3: Cross multiply
    92,772.78x = 128,023.90 × 51,378.34
  4. Step 4: Simplify right side
    92,772.78x = 6,577,655,462.33
  5. Step 5: Solve for x
    x = 6,577,655,462.33/92,772.78
  6. Step 6: Final answer
    x = 70,900.70

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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.