Home / 88,967.90-122,706.36-57,139.76

Finding the Fourth Proportional to 88,967.90, 122,706.36 and 57,139.76

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Solution

The fourth proportional to 88,967.90, 122,706.36 and 57,139.76 is: 78,808.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,967.90 : 122,706.36 = 57,139.76 : x
  2. Step 2: Convert to fraction form
    88,967.90/122,706.36 = 57,139.76/x
  3. Step 3: Cross multiply
    88,967.90x = 122,706.36 × 57,139.76
  4. Step 4: Simplify right side
    88,967.90x = 7,011,412,267.64
  5. Step 5: Solve for x
    x = 7,011,412,267.64/88,967.90
  6. Step 6: Final answer
    x = 78,808.34

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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.