Home / 80,005,371.20-120,008,056.80-59,849,979.20

Finding the Fourth Proportional to 80,005,371.20, 120,008,056.80 and 59,849,979.20

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Solution

The fourth proportional to 80,005,371.20, 120,008,056.80 and 59,849,979.20 is: 89,774,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,005,371.20 : 120,008,056.80 = 59,849,979.20 : x
  2. Step 2: Convert to fraction form
    80,005,371.20/120,008,056.80 = 59,849,979.20/x
  3. Step 3: Cross multiply
    80,005,371.20x = 120,008,056.80 × 59,849,979.20
  4. Step 4: Simplify right side
    80,005,371.20x = 7,182,479,703,312,419
  5. Step 5: Solve for x
    x = 7,182,479,703,312,419/80,005,371.20
  6. Step 6: Final answer
    x = 89,774,968.80

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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.