Home / 68,810.96-103,070.63-51,985.64

Finding the Fourth Proportional to 68,810.96, 103,070.63 and 51,985.64

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Solution

The fourth proportional to 68,810.96, 103,070.63 and 51,985.64 is: 77,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,810.96 : 103,070.63 = 51,985.64 : x
  2. Step 2: Convert to fraction form
    68,810.96/103,070.63 = 51,985.64/x
  3. Step 3: Cross multiply
    68,810.96x = 103,070.63 × 51,985.64
  4. Step 4: Simplify right side
    68,810.96x = 5,358,191,890.47
  5. Step 5: Solve for x
    x = 5,358,191,890.47/68,810.96
  6. Step 6: Final answer
    x = 77,868.30

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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.