Home / 72,073,381.24-108,128,499.88-20,955,399.84

Finding the Fourth Proportional to 72,073,381.24, 108,128,499.88 and 20,955,399.84

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Solution

The fourth proportional to 72,073,381.24, 108,128,499.88 and 20,955,399.84 is: 31,438,457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,073,381.24 : 108,128,499.88 = 20,955,399.84 : x
  2. Step 2: Convert to fraction form
    72,073,381.24/108,128,499.88 = 20,955,399.84/x
  3. Step 3: Cross multiply
    72,073,381.24x = 108,128,499.88 × 20,955,399.84
  4. Step 4: Simplify right side
    72,073,381.24x = 2,265,875,949,084,792
  5. Step 5: Solve for x
    x = 2,265,875,949,084,792/72,073,381.24
  6. Step 6: Final answer
    x = 31,438,457.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.