Home / 68,054.18-102,070.35-21,307.05

Finding the Fourth Proportional to 68,054.18, 102,070.35 and 21,307.05

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Solution

The fourth proportional to 68,054.18, 102,070.35 and 21,307.05 is: 31,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,054.18 : 102,070.35 = 21,307.05 : x
  2. Step 2: Convert to fraction form
    68,054.18/102,070.35 = 21,307.05/x
  3. Step 3: Cross multiply
    68,054.18x = 102,070.35 × 21,307.05
  4. Step 4: Simplify right side
    68,054.18x = 2,174,818,050.97
  5. Step 5: Solve for x
    x = 2,174,818,050.97/68,054.18
  6. Step 6: Final answer
    x = 31,957.16

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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.