Home / 72,347.49-99,840.23-40,082.79

Finding the Fourth Proportional to 72,347.49, 99,840.23 and 40,082.79

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Solution

The fourth proportional to 72,347.49, 99,840.23 and 40,082.79 is: 55,314.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,347.49 : 99,840.23 = 40,082.79 : x
  2. Step 2: Convert to fraction form
    72,347.49/99,840.23 = 40,082.79/x
  3. Step 3: Cross multiply
    72,347.49x = 99,840.23 × 40,082.79
  4. Step 4: Simplify right side
    72,347.49x = 4,001,874,772.23
  5. Step 5: Solve for x
    x = 4,001,874,772.23/72,347.49
  6. Step 6: Final answer
    x = 55,314.63

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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.