Home / 92,985.06-128,318.43-50,543.31

Finding the Fourth Proportional to 92,985.06, 128,318.43 and 50,543.31

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Solution

The fourth proportional to 92,985.06, 128,318.43 and 50,543.31 is: 69,749.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,985.06 : 128,318.43 = 50,543.31 : x
  2. Step 2: Convert to fraction form
    92,985.06/128,318.43 = 50,543.31/x
  3. Step 3: Cross multiply
    92,985.06x = 128,318.43 × 50,543.31
  4. Step 4: Simplify right side
    92,985.06x = 6,485,638,186.20
  5. Step 5: Solve for x
    x = 6,485,638,186.20/92,985.06
  6. Step 6: Final answer
    x = 69,749.25

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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.