Home / 76,321.55-105,330.21-42,340.99

Finding the Fourth Proportional to 76,321.55, 105,330.21 and 42,340.99

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Solution

The fourth proportional to 76,321.55, 105,330.21 and 42,340.99 is: 58,434.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,321.55 : 105,330.21 = 42,340.99 : x
  2. Step 2: Convert to fraction form
    76,321.55/105,330.21 = 42,340.99/x
  3. Step 3: Cross multiply
    76,321.55x = 105,330.21 × 42,340.99
  4. Step 4: Simplify right side
    76,321.55x = 4,459,785,368.31
  5. Step 5: Solve for x
    x = 4,459,785,368.31/76,321.55
  6. Step 6: Final answer
    x = 58,434.16

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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.