Home / 80,646.52-111,128.07-62,386.32

Finding the Fourth Proportional to 80,646.52, 111,128.07 and 62,386.32

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Solution

The fourth proportional to 80,646.52, 111,128.07 and 62,386.32 is: 85,966.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,646.52 : 111,128.07 = 62,386.32 : x
  2. Step 2: Convert to fraction form
    80,646.52/111,128.07 = 62,386.32/x
  3. Step 3: Cross multiply
    80,646.52x = 111,128.07 × 62,386.32
  4. Step 4: Simplify right side
    80,646.52x = 6,932,871,336.00
  5. Step 5: Solve for x
    x = 6,932,871,336.00/80,646.52
  6. Step 6: Final answer
    x = 85,966.16

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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.