Home / 56,660.08-78,189.80-31,509.04

Finding the Fourth Proportional to 56,660.08, 78,189.80 and 31,509.04

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Solution

The fourth proportional to 56,660.08, 78,189.80 and 31,509.04 is: 43,481.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,660.08 : 78,189.80 = 31,509.04 : x
  2. Step 2: Convert to fraction form
    56,660.08/78,189.80 = 31,509.04/x
  3. Step 3: Cross multiply
    56,660.08x = 78,189.80 × 31,509.04
  4. Step 4: Simplify right side
    56,660.08x = 2,463,685,535.79
  5. Step 5: Solve for x
    x = 2,463,685,535.79/56,660.08
  6. Step 6: Final answer
    x = 43,481.86

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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.