Home / 72,077.53-99,457.71-40,247.77

Finding the Fourth Proportional to 72,077.53, 99,457.71 and 40,247.77

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Solution

The fourth proportional to 72,077.53, 99,457.71 and 40,247.77 is: 55,536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,077.53 : 99,457.71 = 40,247.77 : x
  2. Step 2: Convert to fraction form
    72,077.53/99,457.71 = 40,247.77/x
  3. Step 3: Cross multiply
    72,077.53x = 99,457.71 × 40,247.77
  4. Step 4: Simplify right side
    72,077.53x = 4,002,951,036.81
  5. Step 5: Solve for x
    x = 4,002,951,036.81/72,077.53
  6. Step 6: Final answer
    x = 55,536.74

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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.