Home / 76,421.25-105,471.05-42,887.25

Finding the Fourth Proportional to 76,421.25, 105,471.05 and 42,887.25

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Solution

The fourth proportional to 76,421.25, 105,471.05 and 42,887.25 is: 59,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,421.25 : 105,471.05 = 42,887.25 : x
  2. Step 2: Convert to fraction form
    76,421.25/105,471.05 = 42,887.25/x
  3. Step 3: Cross multiply
    76,421.25x = 105,471.05 × 42,887.25
  4. Step 4: Simplify right side
    76,421.25x = 4,523,363,074.68
  5. Step 5: Solve for x
    x = 4,523,363,074.68/76,421.25
  6. Step 6: Final answer
    x = 59,189.86

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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.