Home / 91,015.42-136,584.64-31,851.60

Finding the Fourth Proportional to 91,015.42, 136,584.64 and 31,851.60

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Solution

The fourth proportional to 91,015.42, 136,584.64 and 31,851.60 is: 47,798.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,015.42 : 136,584.64 = 31,851.60 : x
  2. Step 2: Convert to fraction form
    91,015.42/136,584.64 = 31,851.60/x
  3. Step 3: Cross multiply
    91,015.42x = 136,584.64 × 31,851.60
  4. Step 4: Simplify right side
    91,015.42x = 4,350,439,319.42
  5. Step 5: Solve for x
    x = 4,350,439,319.42/91,015.42
  6. Step 6: Final answer
    x = 47,798.93

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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.