Home / 82,752.40-124,128.60-51,605.20

Finding the Fourth Proportional to 82,752.40, 124,128.60 and 51,605.20

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Solution

The fourth proportional to 82,752.40, 124,128.60 and 51,605.20 is: 77,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,752.40 : 124,128.60 = 51,605.20 : x
  2. Step 2: Convert to fraction form
    82,752.40/124,128.60 = 51,605.20/x
  3. Step 3: Cross multiply
    82,752.40x = 124,128.60 × 51,605.20
  4. Step 4: Simplify right side
    82,752.40x = 6,405,681,228.72
  5. Step 5: Solve for x
    x = 6,405,681,228.72/82,752.40
  6. Step 6: Final answer
    x = 77,407.80

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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.