Home / 85,901,214.39-128,872,002.84-28,393,485.63

Finding the Fourth Proportional to 85,901,214.39, 128,872,002.84 and 28,393,485.63

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Solution

The fourth proportional to 85,901,214.39, 128,872,002.84 and 28,393,485.63 is: 42,596,899.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,901,214.39 : 128,872,002.84 = 28,393,485.63 : x
  2. Step 2: Convert to fraction form
    85,901,214.39/128,872,002.84 = 28,393,485.63/x
  3. Step 3: Cross multiply
    85,901,214.39x = 128,872,002.84 × 28,393,485.63
  4. Step 4: Simplify right side
    85,901,214.39x = 3,659,125,360,746,859
  5. Step 5: Solve for x
    x = 3,659,125,360,746,859/85,901,214.39
  6. Step 6: Final answer
    x = 42,596,899.09

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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.