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Finding the Fourth Proportional to 85,206,686.70, 127,810,030.05 and 71,601,797.10

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Solution

The fourth proportional to 85,206,686.70, 127,810,030.05 and 71,601,797.10 is: 107,402,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,206,686.70 : 127,810,030.05 = 71,601,797.10 : x
  2. Step 2: Convert to fraction form
    85,206,686.70/127,810,030.05 = 71,601,797.10/x
  3. Step 3: Cross multiply
    85,206,686.70x = 127,810,030.05 × 71,601,797.10
  4. Step 4: Simplify right side
    85,206,686.70x = 9,151,427,838,985,002
  5. Step 5: Solve for x
    x = 9,151,427,838,985,002/85,206,686.70
  6. Step 6: Final answer
    x = 107,402,695.65

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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.