Home / 76,020-104,905.68-42,486.24

Finding the Fourth Proportional to 76,020, 104,905.68 and 42,486.24

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Solution

The fourth proportional to 76,020, 104,905.68 and 42,486.24 is: 58,629.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,020 : 104,905.68 = 42,486.24 : x
  2. Step 2: Convert to fraction form
    76,020/104,905.68 = 42,486.24/x
  3. Step 3: Cross multiply
    76,020x = 104,905.68 × 42,486.24
  4. Step 4: Simplify right side
    76,020x = 4,457,047,897.84
  5. Step 5: Solve for x
    x = 4,457,047,897.84/76,020
  6. Step 6: Final answer
    x = 58,629.94

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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.