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Finding the Fourth Proportional to 67,862,207.80, 101,788,646.10 and 21,803,404.60

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Solution

The fourth proportional to 67,862,207.80, 101,788,646.10 and 21,803,404.60 is: 32,703,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,862,207.80 : 101,788,646.10 = 21,803,404.60 : x
  2. Step 2: Convert to fraction form
    67,862,207.80/101,788,646.10 = 21,803,404.60/x
  3. Step 3: Cross multiply
    67,862,207.80x = 101,788,646.10 × 21,803,404.60
  4. Step 4: Simplify right side
    67,862,207.80x = 2,219,339,034,604,512
  5. Step 5: Solve for x
    x = 2,219,339,034,604,512/67,862,207.80
  6. Step 6: Final answer
    x = 32,703,607.89

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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.