Home / 72,156,518.55-108,223,841.85-19,638,282.55

Finding the Fourth Proportional to 72,156,518.55, 108,223,841.85 and 19,638,282.55

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Solution

The fourth proportional to 72,156,518.55, 108,223,841.85 and 19,638,282.55 is: 29,454,447.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,156,518.55 : 108,223,841.85 = 19,638,282.55 : x
  2. Step 2: Convert to fraction form
    72,156,518.55/108,223,841.85 = 19,638,282.55/x
  3. Step 3: Cross multiply
    72,156,518.55x = 108,223,841.85 × 19,638,282.55
  4. Step 4: Simplify right side
    72,156,518.55x = 2,125,330,385,170,420.25
  5. Step 5: Solve for x
    x = 2,125,330,385,170,420.25/72,156,518.55
  6. Step 6: Final answer
    x = 29,454,447.47

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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.