Home / 79,239,345.40-118,859,018.10-72,436,900.60

Finding the Fourth Proportional to 79,239,345.40, 118,859,018.10 and 72,436,900.60

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Solution

The fourth proportional to 79,239,345.40, 118,859,018.10 and 72,436,900.60 is: 108,655,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,239,345.40 : 118,859,018.10 = 72,436,900.60 : x
  2. Step 2: Convert to fraction form
    79,239,345.40/118,859,018.10 = 72,436,900.60/x
  3. Step 3: Cross multiply
    79,239,345.40x = 118,859,018.10 × 72,436,900.60
  4. Step 4: Simplify right side
    79,239,345.40x = 8,609,778,879,523,300
  5. Step 5: Solve for x
    x = 8,609,778,879,523,300/79,239,345.40
  6. Step 6: Final answer
    x = 108,655,350.90

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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.