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Finding the Fourth Proportional to 60,999,765.60, 91,499,648.40 and 20,609,666.40

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Solution

The fourth proportional to 60,999,765.60, 91,499,648.40 and 20,609,666.40 is: 30,914,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,999,765.60 : 91,499,648.40 = 20,609,666.40 : x
  2. Step 2: Convert to fraction form
    60,999,765.60/91,499,648.40 = 20,609,666.40/x
  3. Step 3: Cross multiply
    60,999,765.60x = 91,499,648.40 × 20,609,666.40
  4. Step 4: Simplify right side
    60,999,765.60x = 1,885,777,229,241,293.75
  5. Step 5: Solve for x
    x = 1,885,777,229,241,293.75/60,999,765.60
  6. Step 6: Final answer
    x = 30,914,499.60

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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.