Home / 72,344.79-99,836.55-40,080.36

Finding the Fourth Proportional to 72,344.79, 99,836.55 and 40,080.36

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Solution

The fourth proportional to 72,344.79, 99,836.55 and 40,080.36 is: 55,311.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,344.79 : 99,836.55 = 40,080.36 : x
  2. Step 2: Convert to fraction form
    72,344.79/99,836.55 = 40,080.36/x
  3. Step 3: Cross multiply
    72,344.79x = 99,836.55 × 40,080.36
  4. Step 4: Simplify right side
    72,344.79x = 4,001,484,865.16
  5. Step 5: Solve for x
    x = 4,001,484,865.16/72,344.79
  6. Step 6: Final answer
    x = 55,311.31

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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.