Home / 72,415.11-99,938.75-40,152.93

Finding the Fourth Proportional to 72,415.11, 99,938.75 and 40,152.93

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Solution

The fourth proportional to 72,415.11, 99,938.75 and 40,152.93 is: 55,414.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,415.11 : 99,938.75 = 40,152.93 : x
  2. Step 2: Convert to fraction form
    72,415.11/99,938.75 = 40,152.93/x
  3. Step 3: Cross multiply
    72,415.11x = 99,938.75 × 40,152.93
  4. Step 4: Simplify right side
    72,415.11x = 4,012,833,633.04
  5. Step 5: Solve for x
    x = 4,012,833,633.04/72,415.11
  6. Step 6: Final answer
    x = 55,414.31

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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.