Home / 72,769.34-100,421.52-40,938.23

Finding the Fourth Proportional to 72,769.34, 100,421.52 and 40,938.23

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Solution

The fourth proportional to 72,769.34, 100,421.52 and 40,938.23 is: 56,494.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.34 : 100,421.52 = 40,938.23 : x
  2. Step 2: Convert to fraction form
    72,769.34/100,421.52 = 40,938.23/x
  3. Step 3: Cross multiply
    72,769.34x = 100,421.52 × 40,938.23
  4. Step 4: Simplify right side
    72,769.34x = 4,111,079,282.71
  5. Step 5: Solve for x
    x = 4,111,079,282.71/72,769.34
  6. Step 6: Final answer
    x = 56,494.66

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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.