Home / 90,567.04-135,831.12-56,816.80

Finding the Fourth Proportional to 90,567.04, 135,831.12 and 56,816.80

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Solution

The fourth proportional to 90,567.04, 135,831.12 and 56,816.80 is: 85,213.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,567.04 : 135,831.12 = 56,816.80 : x
  2. Step 2: Convert to fraction form
    90,567.04/135,831.12 = 56,816.80/x
  3. Step 3: Cross multiply
    90,567.04x = 135,831.12 × 56,816.80
  4. Step 4: Simplify right side
    90,567.04x = 7,717,489,578.82
  5. Step 5: Solve for x
    x = 7,717,489,578.82/90,567.04
  6. Step 6: Final answer
    x = 85,213.00

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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.