Home / 76,318.74-105,326.16-42,338.19

Finding the Fourth Proportional to 76,318.74, 105,326.16 and 42,338.19

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Solution

The fourth proportional to 76,318.74, 105,326.16 and 42,338.19 is: 58,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,318.74 : 105,326.16 = 42,338.19 : x
  2. Step 2: Convert to fraction form
    76,318.74/105,326.16 = 42,338.19/x
  3. Step 3: Cross multiply
    76,318.74x = 105,326.16 × 42,338.19
  4. Step 4: Simplify right side
    76,318.74x = 4,459,318,974.05
  5. Step 5: Solve for x
    x = 4,459,318,974.05/76,318.74
  6. Step 6: Final answer
    x = 58,430.20

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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.