Home / 81,607,611.60-122,411,417.40-76,930,930.80

Finding the Fourth Proportional to 81,607,611.60, 122,411,417.40 and 76,930,930.80

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Solution

The fourth proportional to 81,607,611.60, 122,411,417.40 and 76,930,930.80 is: 115,396,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,611.60 : 122,411,417.40 = 76,930,930.80 : x
  2. Step 2: Convert to fraction form
    81,607,611.60/122,411,417.40 = 76,930,930.80/x
  3. Step 3: Cross multiply
    81,607,611.60x = 122,411,417.40 × 76,930,930.80
  4. Step 4: Simplify right side
    81,607,611.60x = 9,417,224,281,129,316
  5. Step 5: Solve for x
    x = 9,417,224,281,129,316/81,607,611.60
  6. Step 6: Final answer
    x = 115,396,396.20

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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.