Home / 72,147.69-99,561.95-40,316.85

Finding the Fourth Proportional to 72,147.69, 99,561.95 and 40,316.85

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Solution

The fourth proportional to 72,147.69, 99,561.95 and 40,316.85 is: 55,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.69 : 99,561.95 = 40,316.85 : x
  2. Step 2: Convert to fraction form
    72,147.69/99,561.95 = 40,316.85/x
  3. Step 3: Cross multiply
    72,147.69x = 99,561.95 × 40,316.85
  4. Step 4: Simplify right side
    72,147.69x = 4,014,024,203.86
  5. Step 5: Solve for x
    x = 4,014,024,203.86/72,147.69
  6. Step 6: Final answer
    x = 55,636.21

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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.