Home / 71,688.18-107,510.40-19,090.84

Finding the Fourth Proportional to 71,688.18, 107,510.40 and 19,090.84

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Solution

The fourth proportional to 71,688.18, 107,510.40 and 19,090.84 is: 28,630.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,688.18 : 107,510.40 = 19,090.84 : x
  2. Step 2: Convert to fraction form
    71,688.18/107,510.40 = 19,090.84/x
  3. Step 3: Cross multiply
    71,688.18x = 107,510.40 × 19,090.84
  4. Step 4: Simplify right side
    71,688.18x = 2,052,463,844.74
  5. Step 5: Solve for x
    x = 2,052,463,844.74/71,688.18
  6. Step 6: Final answer
    x = 28,630.44

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1.5x scale

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.