Home / 82,781,124.40-124,171,686.60-39,628,115.20

Finding the Fourth Proportional to 82,781,124.40, 124,171,686.60 and 39,628,115.20

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Solution

The fourth proportional to 82,781,124.40, 124,171,686.60 and 39,628,115.20 is: 59,442,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,781,124.40 : 124,171,686.60 = 39,628,115.20 : x
  2. Step 2: Convert to fraction form
    82,781,124.40/124,171,686.60 = 39,628,115.20/x
  3. Step 3: Cross multiply
    82,781,124.40x = 124,171,686.60 × 39,628,115.20
  4. Step 4: Simplify right side
    82,781,124.40x = 4,920,689,901,163,096
  5. Step 5: Solve for x
    x = 4,920,689,901,163,096/82,781,124.40
  6. Step 6: Final answer
    x = 59,442,172.80

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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.