Home / 56,688.80-85,036.40-17,247.20

Finding the Fourth Proportional to 56,688.80, 85,036.40 and 17,247.20

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Solution

The fourth proportional to 56,688.80, 85,036.40 and 17,247.20 is: 25,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,688.80 : 85,036.40 = 17,247.20 : x
  2. Step 2: Convert to fraction form
    56,688.80/85,036.40 = 17,247.20/x
  3. Step 3: Cross multiply
    56,688.80x = 85,036.40 × 17,247.20
  4. Step 4: Simplify right side
    56,688.80x = 1,466,639,798.08
  5. Step 5: Solve for x
    x = 1,466,639,798.08/56,688.80
  6. Step 6: Final answer
    x = 25,871.77

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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.