Home / 84,463,281.40-126,694,922.10-66,323,428.60

Finding the Fourth Proportional to 84,463,281.40, 126,694,922.10 and 66,323,428.60

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Solution

The fourth proportional to 84,463,281.40, 126,694,922.10 and 66,323,428.60 is: 99,485,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,463,281.40 : 126,694,922.10 = 66,323,428.60 : x
  2. Step 2: Convert to fraction form
    84,463,281.40/126,694,922.10 = 66,323,428.60/x
  3. Step 3: Cross multiply
    84,463,281.40x = 126,694,922.10 × 66,323,428.60
  4. Step 4: Simplify right side
    84,463,281.40x = 8,402,841,619,881,912
  5. Step 5: Solve for x
    x = 8,402,841,619,881,912/84,463,281.40
  6. Step 6: Final answer
    x = 99,485,142.90

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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.