Home / 72,402,154.60-108,605,856.30-21,289,340.20

Finding the Fourth Proportional to 72,402,154.60, 108,605,856.30 and 21,289,340.20

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Solution

The fourth proportional to 72,402,154.60, 108,605,856.30 and 21,289,340.20 is: 31,934,781.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,402,154.60 : 108,605,856.30 = 21,289,340.20 : x
  2. Step 2: Convert to fraction form
    72,402,154.60/108,605,856.30 = 21,289,340.20/x
  3. Step 3: Cross multiply
    72,402,154.60x = 108,605,856.30 × 21,289,340.20
  4. Step 4: Simplify right side
    72,402,154.60x = 2,312,147,022,483,013
  5. Step 5: Solve for x
    x = 2,312,147,022,483,013/72,402,154.60
  6. Step 6: Final answer
    x = 31,934,781.99

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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.