Home / 66,278.59-99,417.89-54,567.21

Finding the Fourth Proportional to 66,278.59, 99,417.89 and 54,567.21

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Solution

The fourth proportional to 66,278.59, 99,417.89 and 54,567.21 is: 81,850.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,278.59 : 99,417.89 = 54,567.21 : x
  2. Step 2: Convert to fraction form
    66,278.59/99,417.89 = 54,567.21/x
  3. Step 3: Cross multiply
    66,278.59x = 99,417.89 × 54,567.21
  4. Step 4: Simplify right side
    66,278.59x = 5,424,956,831.40
  5. Step 5: Solve for x
    x = 5,424,956,831.40/66,278.59
  6. Step 6: Final answer
    x = 81,850.81

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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.