Home / 85,408,042.24-128,085,567.16-30,813,530.68

Finding the Fourth Proportional to 85,408,042.24, 128,085,567.16 and 30,813,530.68

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Solution

The fourth proportional to 85,408,042.24, 128,085,567.16 and 30,813,530.68 is: 46,210,736.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,408,042.24 : 128,085,567.16 = 30,813,530.68 : x
  2. Step 2: Convert to fraction form
    85,408,042.24/128,085,567.16 = 30,813,530.68/x
  3. Step 3: Cross multiply
    85,408,042.24x = 128,085,567.16 × 30,813,530.68
  4. Step 4: Simplify right side
    85,408,042.24x = 3,946,768,553,349,860.50
  5. Step 5: Solve for x
    x = 3,946,768,553,349,860.50/85,408,042.24
  6. Step 6: Final answer
    x = 46,210,736.72

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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.