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Finding the Fourth Proportional to 30,337,687.40, 45,506,531.10 and 20,134,020.20

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Solution

The fourth proportional to 30,337,687.40, 45,506,531.10 and 20,134,020.20 is: 30,201,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,337,687.40 : 45,506,531.10 = 20,134,020.20 : x
  2. Step 2: Convert to fraction form
    30,337,687.40/45,506,531.10 = 20,134,020.20/x
  3. Step 3: Cross multiply
    30,337,687.40x = 45,506,531.10 × 20,134,020.20
  4. Step 4: Simplify right side
    30,337,687.40x = 916,229,416,399,328.25
  5. Step 5: Solve for x
    x = 916,229,416,399,328.25/30,337,687.40
  6. Step 6: Final answer
    x = 30,201,030.30

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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.