Home / 72,715.52-100,313.74-42,502.12

Finding the Fourth Proportional to 72,715.52, 100,313.74 and 42,502.12

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Solution

The fourth proportional to 72,715.52, 100,313.74 and 42,502.12 is: 58,633.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,715.52 : 100,313.74 = 42,502.12 : x
  2. Step 2: Convert to fraction form
    72,715.52/100,313.74 = 42,502.12/x
  3. Step 3: Cross multiply
    72,715.52x = 100,313.74 × 42,502.12
  4. Step 4: Simplify right side
    72,715.52x = 4,263,546,417.47
  5. Step 5: Solve for x
    x = 4,263,546,417.47/72,715.52
  6. Step 6: Final answer
    x = 58,633.24

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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.