Home / 76,412.62-105,444.68-42,419.12

Finding the Fourth Proportional to 76,412.62, 105,444.68 and 42,419.12

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Solution

The fourth proportional to 76,412.62, 105,444.68 and 42,419.12 is: 58,535.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,412.62 : 105,444.68 = 42,419.12 : x
  2. Step 2: Convert to fraction form
    76,412.62/105,444.68 = 42,419.12/x
  3. Step 3: Cross multiply
    76,412.62x = 105,444.68 × 42,419.12
  4. Step 4: Simplify right side
    76,412.62x = 4,472,870,534.28
  5. Step 5: Solve for x
    x = 4,472,870,534.28/76,412.62
  6. Step 6: Final answer
    x = 58,535.76

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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.