Home / 72,312.35-108,457.38-19,725.93

Finding the Fourth Proportional to 72,312.35, 108,457.38 and 19,725.93

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Solution

The fourth proportional to 72,312.35, 108,457.38 and 19,725.93 is: 29,585.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,312.35 : 108,457.38 = 19,725.93 : x
  2. Step 2: Convert to fraction form
    72,312.35/108,457.38 = 19,725.93/x
  3. Step 3: Cross multiply
    72,312.35x = 108,457.38 × 19,725.93
  4. Step 4: Simplify right side
    72,312.35x = 2,139,422,685.86
  5. Step 5: Solve for x
    x = 2,139,422,685.86/72,312.35
  6. Step 6: Final answer
    x = 29,585.86

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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.