Home / 72,385.94-99,767.85-48,143.56

Finding the Fourth Proportional to 72,385.94, 99,767.85 and 48,143.56

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Solution

The fourth proportional to 72,385.94, 99,767.85 and 48,143.56 is: 66,355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,385.94 : 99,767.85 = 48,143.56 : x
  2. Step 2: Convert to fraction form
    72,385.94/99,767.85 = 48,143.56/x
  3. Step 3: Cross multiply
    72,385.94x = 99,767.85 × 48,143.56
  4. Step 4: Simplify right side
    72,385.94x = 4,803,179,223.13
  5. Step 5: Solve for x
    x = 4,803,179,223.13/72,385.94
  6. Step 6: Final answer
    x = 66,355.14

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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.