Home / 72,691,569.20-108,931,065.60-61,850,172.80

Finding the Fourth Proportional to 72,691,569.20, 108,931,065.60 and 61,850,172.80

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Solution

The fourth proportional to 72,691,569.20, 108,931,065.60 and 61,850,172.80 is: 92,684,823.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,691,569.20 : 108,931,065.60 = 61,850,172.80 : x
  2. Step 2: Convert to fraction form
    72,691,569.20/108,931,065.60 = 61,850,172.80/x
  3. Step 3: Cross multiply
    72,691,569.20x = 108,931,065.60 × 61,850,172.80
  4. Step 4: Simplify right side
    72,691,569.20x = 6,737,405,230,648,135
  5. Step 5: Solve for x
    x = 6,737,405,230,648,135/72,691,569.20
  6. Step 6: Final answer
    x = 92,684,823.08

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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.