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Finding the Fourth Proportional to 68,375,599.10, 102,563,398.65 and 20,506,543.10

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Solution

The fourth proportional to 68,375,599.10, 102,563,398.65 and 20,506,543.10 is: 30,759,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,375,599.10 : 102,563,398.65 = 20,506,543.10 : x
  2. Step 2: Convert to fraction form
    68,375,599.10/102,563,398.65 = 20,506,543.10/x
  3. Step 3: Cross multiply
    68,375,599.10x = 102,563,398.65 × 20,506,543.10
  4. Step 4: Simplify right side
    68,375,599.10x = 2,103,220,754,898,707
  5. Step 5: Solve for x
    x = 2,103,220,754,898,707/68,375,599.10
  6. Step 6: Final answer
    x = 30,759,814.65

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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.