Home / 72,407.22-99,920.34-42,190.66

Finding the Fourth Proportional to 72,407.22, 99,920.34 and 42,190.66

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Solution

The fourth proportional to 72,407.22, 99,920.34 and 42,190.66 is: 58,222.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,407.22 : 99,920.34 = 42,190.66 : x
  2. Step 2: Convert to fraction form
    72,407.22/99,920.34 = 42,190.66/x
  3. Step 3: Cross multiply
    72,407.22x = 99,920.34 × 42,190.66
  4. Step 4: Simplify right side
    72,407.22x = 4,215,705,092.02
  5. Step 5: Solve for x
    x = 4,215,705,092.02/72,407.22
  6. Step 6: Final answer
    x = 58,222.16

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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.