Home / 82,815,128.40-124,222,692.60-56,987,095.80

Finding the Fourth Proportional to 82,815,128.40, 124,222,692.60 and 56,987,095.80

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Solution

The fourth proportional to 82,815,128.40, 124,222,692.60 and 56,987,095.80 is: 85,480,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,815,128.40 : 124,222,692.60 = 56,987,095.80 : x
  2. Step 2: Convert to fraction form
    82,815,128.40/124,222,692.60 = 56,987,095.80/x
  3. Step 3: Cross multiply
    82,815,128.40x = 124,222,692.60 × 56,987,095.80
  4. Step 4: Simplify right side
    82,815,128.40x = 7,079,090,483,730,150
  5. Step 5: Solve for x
    x = 7,079,090,483,730,150/82,815,128.40
  6. Step 6: Final answer
    x = 85,480,643.70

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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.