Home / 75,008.70-112,513.05-66,714.30

Finding the Fourth Proportional to 75,008.70, 112,513.05 and 66,714.30

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Solution

The fourth proportional to 75,008.70, 112,513.05 and 66,714.30 is: 100,071.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,008.70 : 112,513.05 = 66,714.30 : x
  2. Step 2: Convert to fraction form
    75,008.70/112,513.05 = 66,714.30/x
  3. Step 3: Cross multiply
    75,008.70x = 112,513.05 × 66,714.30
  4. Step 4: Simplify right side
    75,008.70x = 7,506,229,371.62
  5. Step 5: Solve for x
    x = 7,506,229,371.62/75,008.70
  6. Step 6: Final answer
    x = 100,071.45

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1.5x scale

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.