Home / 84,528.64-126,708.76-42,279.81

Finding the Fourth Proportional to 84,528.64, 126,708.76 and 42,279.81

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Solution

The fourth proportional to 84,528.64, 126,708.76 and 42,279.81 is: 63,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,528.64 : 126,708.76 = 42,279.81 : x
  2. Step 2: Convert to fraction form
    84,528.64/126,708.76 = 42,279.81/x
  3. Step 3: Cross multiply
    84,528.64x = 126,708.76 × 42,279.81
  4. Step 4: Simplify right side
    84,528.64x = 5,357,222,298.14
  5. Step 5: Solve for x
    x = 5,357,222,298.14/84,528.64
  6. Step 6: Final answer
    x = 63,377.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.