Home / 72,490,917.60-108,736,376.40-69,703,999.20

Finding the Fourth Proportional to 72,490,917.60, 108,736,376.40 and 69,703,999.20

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Solution

The fourth proportional to 72,490,917.60, 108,736,376.40 and 69,703,999.20 is: 104,555,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,490,917.60 : 108,736,376.40 = 69,703,999.20 : x
  2. Step 2: Convert to fraction form
    72,490,917.60/108,736,376.40 = 69,703,999.20/x
  3. Step 3: Cross multiply
    72,490,917.60x = 108,736,376.40 × 69,703,999.20
  4. Step 4: Simplify right side
    72,490,917.60x = 7,579,360,293,596,500
  5. Step 5: Solve for x
    x = 7,579,360,293,596,500/72,490,917.60
  6. Step 6: Final answer
    x = 104,555,998.80

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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.