Home / 72,785.19-109,062.36-56,185.86

Finding the Fourth Proportional to 72,785.19, 109,062.36 and 56,185.86

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Solution

The fourth proportional to 72,785.19, 109,062.36 and 56,185.86 is: 84,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,785.19 : 109,062.36 = 56,185.86 : x
  2. Step 2: Convert to fraction form
    72,785.19/109,062.36 = 56,185.86/x
  3. Step 3: Cross multiply
    72,785.19x = 109,062.36 × 56,185.86
  4. Step 4: Simplify right side
    72,785.19x = 6,127,762,490.23
  5. Step 5: Solve for x
    x = 6,127,762,490.23/72,785.19
  6. Step 6: Final answer
    x = 84,189.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.