Home / 72,123.66-99,518.49-40,292.82

Finding the Fourth Proportional to 72,123.66, 99,518.49 and 40,292.82

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Solution

The fourth proportional to 72,123.66, 99,518.49 and 40,292.82 is: 55,597.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,123.66 : 99,518.49 = 40,292.82 : x
  2. Step 2: Convert to fraction form
    72,123.66/99,518.49 = 40,292.82/x
  3. Step 3: Cross multiply
    72,123.66x = 99,518.49 × 40,292.82
  4. Step 4: Simplify right side
    72,123.66x = 4,009,880,604.24
  5. Step 5: Solve for x
    x = 4,009,880,604.24/72,123.66
  6. Step 6: Final answer
    x = 55,597.30

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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.