Home / 72,577,981.20-109,090,920.60-71,234,288.40

Finding the Fourth Proportional to 72,577,981.20, 109,090,920.60 and 71,234,288.40

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Solution

The fourth proportional to 72,577,981.20, 109,090,920.60 and 71,234,288.40 is: 107,071,235.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,577,981.20 : 109,090,920.60 = 71,234,288.40 : x
  2. Step 2: Convert to fraction form
    72,577,981.20/109,090,920.60 = 71,234,288.40/x
  3. Step 3: Cross multiply
    72,577,981.20x = 109,090,920.60 × 71,234,288.40
  4. Step 4: Simplify right side
    72,577,981.20x = 7,771,014,099,841,901
  5. Step 5: Solve for x
    x = 7,771,014,099,841,901/72,577,981.20
  6. Step 6: Final answer
    x = 107,071,235.26

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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.