Home / 90,631.83-125,117.37-56,659.20

Finding the Fourth Proportional to 90,631.83, 125,117.37 and 56,659.20

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Solution

The fourth proportional to 90,631.83, 125,117.37 and 56,659.20 is: 78,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,631.83 : 125,117.37 = 56,659.20 : x
  2. Step 2: Convert to fraction form
    90,631.83/125,117.37 = 56,659.20/x
  3. Step 3: Cross multiply
    90,631.83x = 125,117.37 × 56,659.20
  4. Step 4: Simplify right side
    90,631.83x = 7,089,050,090.30
  5. Step 5: Solve for x
    x = 7,089,050,090.30/90,631.83
  6. Step 6: Final answer
    x = 78,218.11

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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.