Home / 72,769.72-100,407.04-42,549.16

Finding the Fourth Proportional to 72,769.72, 100,407.04 and 42,549.16

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Solution

The fourth proportional to 72,769.72, 100,407.04 and 42,549.16 is: 58,708.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.72 : 100,407.04 = 42,549.16 : x
  2. Step 2: Convert to fraction form
    72,769.72/100,407.04 = 42,549.16/x
  3. Step 3: Cross multiply
    72,769.72x = 100,407.04 × 42,549.16
  4. Step 4: Simplify right side
    72,769.72x = 4,272,235,210.09
  5. Step 5: Solve for x
    x = 4,272,235,210.09/72,769.72
  6. Step 6: Final answer
    x = 58,708.97

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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.