Home / 72,511.36-100,056.48-42,306.64

Finding the Fourth Proportional to 72,511.36, 100,056.48 and 42,306.64

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Solution

The fourth proportional to 72,511.36, 100,056.48 and 42,306.64 is: 58,377.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511.36 : 100,056.48 = 42,306.64 : x
  2. Step 2: Convert to fraction form
    72,511.36/100,056.48 = 42,306.64/x
  3. Step 3: Cross multiply
    72,511.36x = 100,056.48 × 42,306.64
  4. Step 4: Simplify right side
    72,511.36x = 4,233,053,479.03
  5. Step 5: Solve for x
    x = 4,233,053,479.03/72,511.36
  6. Step 6: Final answer
    x = 58,377.80

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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.