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Finding the Fourth Proportional to 71,654,763.60, 107,482,145.40 and 42,886,090.80

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Solution

The fourth proportional to 71,654,763.60, 107,482,145.40 and 42,886,090.80 is: 64,329,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,654,763.60 : 107,482,145.40 = 42,886,090.80 : x
  2. Step 2: Convert to fraction form
    71,654,763.60/107,482,145.40 = 42,886,090.80/x
  3. Step 3: Cross multiply
    71,654,763.60x = 107,482,145.40 × 42,886,090.80
  4. Step 4: Simplify right side
    71,654,763.60x = 4,609,489,047,003,202
  5. Step 5: Solve for x
    x = 4,609,489,047,003,202/71,654,763.60
  6. Step 6: Final answer
    x = 64,329,136.20

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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.