Home / 81,648,291.60-122,472,437.40-72,082,353.60

Finding the Fourth Proportional to 81,648,291.60, 122,472,437.40 and 72,082,353.60

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Solution

The fourth proportional to 81,648,291.60, 122,472,437.40 and 72,082,353.60 is: 108,123,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648,291.60 : 122,472,437.40 = 72,082,353.60 : x
  2. Step 2: Convert to fraction form
    81,648,291.60/122,472,437.40 = 72,082,353.60/x
  3. Step 3: Cross multiply
    81,648,291.60x = 122,472,437.40 × 72,082,353.60
  4. Step 4: Simplify right side
    81,648,291.60x = 8,828,101,538,920,664
  5. Step 5: Solve for x
    x = 8,828,101,538,920,664/81,648,291.60
  6. Step 6: Final answer
    x = 108,123,530.40

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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.