Home / 38,490,816.05-57,744,842.07-12,931,128.35

Finding the Fourth Proportional to 38,490,816.05, 57,744,842.07 and 12,931,128.35

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Solution

The fourth proportional to 38,490,816.05, 57,744,842.07 and 12,931,128.35 is: 19,399,587.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,490,816.05 : 57,744,842.07 = 12,931,128.35 : x
  2. Step 2: Convert to fraction form
    38,490,816.05/57,744,842.07 = 12,931,128.35/x
  3. Step 3: Cross multiply
    38,490,816.05x = 57,744,842.07 × 12,931,128.35
  4. Step 4: Simplify right side
    38,490,816.05x = 746,705,964,357,649.62
  5. Step 5: Solve for x
    x = 746,705,964,357,649.62/38,490,816.05
  6. Step 6: Final answer
    x = 19,399,587.77

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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.