Home / 72,579,209.40-108,742,842.90-68,044,246.20

Finding the Fourth Proportional to 72,579,209.40, 108,742,842.90 and 68,044,246.20

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Solution

The fourth proportional to 72,579,209.40, 108,742,842.90 and 68,044,246.20 is: 101,948,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,209.40 : 108,742,842.90 = 68,044,246.20 : x
  2. Step 2: Convert to fraction form
    72,579,209.40/108,742,842.90 = 68,044,246.20/x
  3. Step 3: Cross multiply
    72,579,209.40x = 108,742,842.90 × 68,044,246.20
  4. Step 4: Simplify right side
    72,579,209.40x = 7,399,324,774,775,523
  5. Step 5: Solve for x
    x = 7,399,324,774,775,523/72,579,209.40
  6. Step 6: Final answer
    x = 101,948,269.15

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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.