Home / 90,699.60-125,081.76-56,697.24

Finding the Fourth Proportional to 90,699.60, 125,081.76 and 56,697.24

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Solution

The fourth proportional to 90,699.60, 125,081.76 and 56,697.24 is: 78,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699.60 : 125,081.76 = 56,697.24 : x
  2. Step 2: Convert to fraction form
    90,699.60/125,081.76 = 56,697.24/x
  3. Step 3: Cross multiply
    90,699.60x = 125,081.76 × 56,697.24
  4. Step 4: Simplify right side
    90,699.60x = 7,091,790,566.34
  5. Step 5: Solve for x
    x = 7,091,790,566.34/90,699.60
  6. Step 6: Final answer
    x = 78,189.88

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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.