Home / 90,419,496.40-135,458,572.20-53,420,988.16

Finding the Fourth Proportional to 90,419,496.40, 135,458,572.20 and 53,420,988.16

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Solution

The fourth proportional to 90,419,496.40, 135,458,572.20 and 53,420,988.16 is: 80,030,646.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,419,496.40 : 135,458,572.20 = 53,420,988.16 : x
  2. Step 2: Convert to fraction form
    90,419,496.40/135,458,572.20 = 53,420,988.16/x
  3. Step 3: Cross multiply
    90,419,496.40x = 135,458,572.20 × 53,420,988.16
  4. Step 4: Simplify right side
    90,419,496.40x = 7,236,330,781,666,704
  5. Step 5: Solve for x
    x = 7,236,330,781,666,704/90,419,496.40
  6. Step 6: Final answer
    x = 80,030,646.82

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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.