Home / 72,056.30-99,433.55-40,227.21

Finding the Fourth Proportional to 72,056.30, 99,433.55 and 40,227.21

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Solution

The fourth proportional to 72,056.30, 99,433.55 and 40,227.21 is: 55,511.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,056.30 : 99,433.55 = 40,227.21 : x
  2. Step 2: Convert to fraction form
    72,056.30/99,433.55 = 40,227.21/x
  3. Step 3: Cross multiply
    72,056.30x = 99,433.55 × 40,227.21
  4. Step 4: Simplify right side
    72,056.30x = 3,999,934,095.76
  5. Step 5: Solve for x
    x = 3,999,934,095.76/72,056.30
  6. Step 6: Final answer
    x = 55,511.24

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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.