Home / 76,281.09-105,274.11-42,300.23

Finding the Fourth Proportional to 76,281.09, 105,274.11 and 42,300.23

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Solution

The fourth proportional to 76,281.09, 105,274.11 and 42,300.23 is: 58,377.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,281.09 : 105,274.11 = 42,300.23 : x
  2. Step 2: Convert to fraction form
    76,281.09/105,274.11 = 42,300.23/x
  3. Step 3: Cross multiply
    76,281.09x = 105,274.11 × 42,300.23
  4. Step 4: Simplify right side
    76,281.09x = 4,453,118,539.67
  5. Step 5: Solve for x
    x = 4,453,118,539.67/76,281.09
  6. Step 6: Final answer
    x = 58,377.75

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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.