Home / 85,725,652.16-128,578,290.96-28,203,658.40

Finding the Fourth Proportional to 85,725,652.16, 128,578,290.96 and 28,203,658.40

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Solution

The fourth proportional to 85,725,652.16, 128,578,290.96 and 28,203,658.40 is: 42,302,135.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,725,652.16 : 128,578,290.96 = 28,203,658.40 : x
  2. Step 2: Convert to fraction form
    85,725,652.16/128,578,290.96 = 28,203,658.40/x
  3. Step 3: Cross multiply
    85,725,652.16x = 128,578,290.96 × 28,203,658.40
  4. Step 4: Simplify right side
    85,725,652.16x = 3,626,378,195,891,647.50
  5. Step 5: Solve for x
    x = 3,626,378,195,891,647.50/85,725,652.16
  6. Step 6: Final answer
    x = 42,302,135.99

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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.