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Finding the Fourth Proportional to 92,999.88, 128,339.10 and 50,557.32

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Solution

The fourth proportional to 92,999.88, 128,339.10 and 50,557.32 is: 69,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,999.88 : 128,339.10 = 50,557.32 : x
  2. Step 2: Convert to fraction form
    92,999.88/128,339.10 = 50,557.32/x
  3. Step 3: Cross multiply
    92,999.88x = 128,339.10 × 50,557.32
  4. Step 4: Simplify right side
    92,999.88x = 6,488,480,947.21
  5. Step 5: Solve for x
    x = 6,488,480,947.21/92,999.88
  6. Step 6: Final answer
    x = 69,768.70

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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.