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Finding the Fourth Proportional to 92,848.64, 128,130.78 and 50,406.86

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Solution

The fourth proportional to 92,848.64, 128,130.78 and 50,406.86 is: 69,561.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,848.64 : 128,130.78 = 50,406.86 : x
  2. Step 2: Convert to fraction form
    92,848.64/128,130.78 = 50,406.86/x
  3. Step 3: Cross multiply
    92,848.64x = 128,130.78 × 50,406.86
  4. Step 4: Simplify right side
    92,848.64x = 6,458,670,289.15
  5. Step 5: Solve for x
    x = 6,458,670,289.15/92,848.64
  6. Step 6: Final answer
    x = 69,561.28

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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.