Home / 56,128.20-77,466.54-53,605.86

Finding the Fourth Proportional to 56,128.20, 77,466.54 and 53,605.86

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Solution

The fourth proportional to 56,128.20, 77,466.54 and 53,605.86 is: 73,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,128.20 : 77,466.54 = 53,605.86 : x
  2. Step 2: Convert to fraction form
    56,128.20/77,466.54 = 53,605.86/x
  3. Step 3: Cross multiply
    56,128.20x = 77,466.54 × 53,605.86
  4. Step 4: Simplify right side
    56,128.20x = 4,152,660,497.92
  5. Step 5: Solve for x
    x = 4,152,660,497.92/56,128.20
  6. Step 6: Final answer
    x = 73,985.28

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1.5x scale

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.