Home / 72,073,344.48-108,128,444.90-20,955,363.24

Finding the Fourth Proportional to 72,073,344.48, 108,128,444.90 and 20,955,363.24

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Solution

The fourth proportional to 72,073,344.48, 108,128,444.90 and 20,955,363.24 is: 31,438,402.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,073,344.48 : 108,128,444.90 = 20,955,363.24 : x
  2. Step 2: Convert to fraction form
    72,073,344.48/108,128,444.90 = 20,955,363.24/x
  3. Step 3: Cross multiply
    72,073,344.48x = 108,128,444.90 × 20,955,363.24
  4. Step 4: Simplify right side
    72,073,344.48x = 2,265,870,839,455,825.50
  5. Step 5: Solve for x
    x = 2,265,870,839,455,825.50/72,073,344.48
  6. Step 6: Final answer
    x = 31,438,402.86

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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.