Home / 77,320.88-106,702.20-70,973.10

Finding the Fourth Proportional to 77,320.88, 106,702.20 and 70,973.10

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Solution

The fourth proportional to 77,320.88, 106,702.20 and 70,973.10 is: 97,942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,320.88 : 106,702.20 = 70,973.10 : x
  2. Step 2: Convert to fraction form
    77,320.88/106,702.20 = 70,973.10/x
  3. Step 3: Cross multiply
    77,320.88x = 106,702.20 × 70,973.10
  4. Step 4: Simplify right side
    77,320.88x = 7,572,985,910.82
  5. Step 5: Solve for x
    x = 7,572,985,910.82/77,320.88
  6. Step 6: Final answer
    x = 97,942.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.