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Finding the Fourth Proportional to 92,798.36, 128,119.78 and 63,776.72

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Solution

The fourth proportional to 92,798.36, 128,119.78 and 63,776.72 is: 88,051.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,798.36 : 128,119.78 = 63,776.72 : x
  2. Step 2: Convert to fraction form
    92,798.36/128,119.78 = 63,776.72/x
  3. Step 3: Cross multiply
    92,798.36x = 128,119.78 × 63,776.72
  4. Step 4: Simplify right side
    92,798.36x = 8,171,058,656.12
  5. Step 5: Solve for x
    x = 8,171,058,656.12/92,798.36
  6. Step 6: Final answer
    x = 88,051.76

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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.