Home / 91,062.76-125,612.44-70,887.72

Finding the Fourth Proportional to 91,062.76, 125,612.44 and 70,887.72

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Solution

The fourth proportional to 91,062.76, 125,612.44 and 70,887.72 is: 97,782.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,062.76 : 125,612.44 = 70,887.72 : x
  2. Step 2: Convert to fraction form
    91,062.76/125,612.44 = 70,887.72/x
  3. Step 3: Cross multiply
    91,062.76x = 125,612.44 × 70,887.72
  4. Step 4: Simplify right side
    91,062.76x = 8,904,379,475.24
  5. Step 5: Solve for x
    x = 8,904,379,475.24/91,062.76
  6. Step 6: Final answer
    x = 97,782.89

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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.