Home / 76,357.31-105,378.86-42,372.23

Finding the Fourth Proportional to 76,357.31, 105,378.86 and 42,372.23

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Solution

The fourth proportional to 76,357.31, 105,378.86 and 42,372.23 is: 58,476.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,357.31 : 105,378.86 = 42,372.23 : x
  2. Step 2: Convert to fraction form
    76,357.31/105,378.86 = 42,372.23/x
  3. Step 3: Cross multiply
    76,357.31x = 105,378.86 × 42,372.23
  4. Step 4: Simplify right side
    76,357.31x = 4,465,136,554.30
  5. Step 5: Solve for x
    x = 4,465,136,554.30/76,357.31
  6. Step 6: Final answer
    x = 58,476.87

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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.