Home / 72,150.50-99,565.76-40,319.66

Finding the Fourth Proportional to 72,150.50, 99,565.76 and 40,319.66

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Solution

The fourth proportional to 72,150.50, 99,565.76 and 40,319.66 is: 55,640.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,150.50 : 99,565.76 = 40,319.66 : x
  2. Step 2: Convert to fraction form
    72,150.50/99,565.76 = 40,319.66/x
  3. Step 3: Cross multiply
    72,150.50x = 99,565.76 × 40,319.66
  4. Step 4: Simplify right side
    72,150.50x = 4,014,457,590.84
  5. Step 5: Solve for x
    x = 4,014,457,590.84/72,150.50
  6. Step 6: Final answer
    x = 55,640.05

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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.