Home / 76,354.08-105,365.09-42,362.21

Finding the Fourth Proportional to 76,354.08, 105,365.09 and 42,362.21

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Solution

The fourth proportional to 76,354.08, 105,365.09 and 42,362.21 is: 58,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,354.08 : 105,365.09 = 42,362.21 : x
  2. Step 2: Convert to fraction form
    76,354.08/105,365.09 = 42,362.21/x
  3. Step 3: Cross multiply
    76,354.08x = 105,365.09 × 42,362.21
  4. Step 4: Simplify right side
    76,354.08x = 4,463,497,330.61
  5. Step 5: Solve for x
    x = 4,463,497,330.61/76,354.08
  6. Step 6: Final answer
    x = 58,457.88

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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.