Home / 92,985.25-128,319.05-50,543.79

Finding the Fourth Proportional to 92,985.25, 128,319.05 and 50,543.79

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Solution

The fourth proportional to 92,985.25, 128,319.05 and 50,543.79 is: 69,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,985.25 : 128,319.05 = 50,543.79 : x
  2. Step 2: Convert to fraction form
    92,985.25/128,319.05 = 50,543.79/x
  3. Step 3: Cross multiply
    92,985.25x = 128,319.05 × 50,543.79
  4. Step 4: Simplify right side
    92,985.25x = 6,485,731,116.20
  5. Step 5: Solve for x
    x = 6,485,731,116.20/92,985.25
  6. Step 6: Final answer
    x = 69,750.11

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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.