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Finding the Fourth Proportional to 58,489.60, 80,678.48 and 38,347.79

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Solution

The fourth proportional to 58,489.60, 80,678.48 and 38,347.79 is: 52,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,489.60 : 80,678.48 = 38,347.79 : x
  2. Step 2: Convert to fraction form
    58,489.60/80,678.48 = 38,347.79/x
  3. Step 3: Cross multiply
    58,489.60x = 80,678.48 × 38,347.79
  4. Step 4: Simplify right side
    58,489.60x = 3,093,841,101.04
  5. Step 5: Solve for x
    x = 3,093,841,101.04/58,489.60
  6. Step 6: Final answer
    x = 52,895.58

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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.