Home / 85,448,118.40-128,271,710.40-51,407,900.80

Finding the Fourth Proportional to 85,448,118.40, 128,271,710.40 and 51,407,900.80

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Solution

The fourth proportional to 85,448,118.40, 128,271,710.40 and 51,407,900.80 is: 77,171,732.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448,118.40 : 128,271,710.40 = 51,407,900.80 : x
  2. Step 2: Convert to fraction form
    85,448,118.40/128,271,710.40 = 51,407,900.80/x
  3. Step 3: Cross multiply
    85,448,118.40x = 128,271,710.40 × 51,407,900.80
  4. Step 4: Simplify right side
    85,448,118.40x = 6,594,179,363,689,528
  5. Step 5: Solve for x
    x = 6,594,179,363,689,528/85,448,118.40
  6. Step 6: Final answer
    x = 77,171,732.83

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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.