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Finding the Fourth Proportional to 66,460.80, 99,691.20 and 50,714.40

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Solution

The fourth proportional to 66,460.80, 99,691.20 and 50,714.40 is: 76,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,460.80 : 99,691.20 = 50,714.40 : x
  2. Step 2: Convert to fraction form
    66,460.80/99,691.20 = 50,714.40/x
  3. Step 3: Cross multiply
    66,460.80x = 99,691.20 × 50,714.40
  4. Step 4: Simplify right side
    66,460.80x = 5,055,779,393.28
  5. Step 5: Solve for x
    x = 5,055,779,393.28/66,460.80
  6. Step 6: Final answer
    x = 76,071.60

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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.