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Finding the Fourth Proportional to 72,313.58, 99,722.64 and 56,392.22

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Solution

The fourth proportional to 72,313.58, 99,722.64 and 56,392.22 is: 77,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,313.58 : 99,722.64 = 56,392.22 : x
  2. Step 2: Convert to fraction form
    72,313.58/99,722.64 = 56,392.22/x
  3. Step 3: Cross multiply
    72,313.58x = 99,722.64 × 56,392.22
  4. Step 4: Simplify right side
    72,313.58x = 5,623,581,053.86
  5. Step 5: Solve for x
    x = 5,623,581,053.86/72,313.58
  6. Step 6: Final answer
    x = 77,766.60

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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.