Home / 72,305.58-99,711.60-56,384.22

Finding the Fourth Proportional to 72,305.58, 99,711.60 and 56,384.22

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Solution

The fourth proportional to 72,305.58, 99,711.60 and 56,384.22 is: 77,755.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,305.58 : 99,711.60 = 56,384.22 : x
  2. Step 2: Convert to fraction form
    72,305.58/99,711.60 = 56,384.22/x
  3. Step 3: Cross multiply
    72,305.58x = 99,711.60 × 56,384.22
  4. Step 4: Simplify right side
    72,305.58x = 5,622,160,790.95
  5. Step 5: Solve for x
    x = 5,622,160,790.95/72,305.58
  6. Step 6: Final answer
    x = 77,755.56

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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.