Home / 80,631,350.40-120,852,547.20-60,412,972.80

Finding the Fourth Proportional to 80,631,350.40, 120,852,547.20 and 60,412,972.80

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Solution

The fourth proportional to 80,631,350.40, 120,852,547.20 and 60,412,972.80 is: 90,548,671.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,631,350.40 : 120,852,547.20 = 60,412,972.80 : x
  2. Step 2: Convert to fraction form
    80,631,350.40/120,852,547.20 = 60,412,972.80/x
  3. Step 3: Cross multiply
    80,631,350.40x = 120,852,547.20 × 60,412,972.80
  4. Step 4: Simplify right side
    80,631,350.40x = 7,301,061,646,804,316
  5. Step 5: Solve for x
    x = 7,301,061,646,804,316/80,631,350.40
  6. Step 6: Final answer
    x = 90,548,671.34

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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.