Home / 91,407.16-137,113.77-31,435.04

Finding the Fourth Proportional to 91,407.16, 137,113.77 and 31,435.04

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Solution

The fourth proportional to 91,407.16, 137,113.77 and 31,435.04 is: 47,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,407.16 : 137,113.77 = 31,435.04 : x
  2. Step 2: Convert to fraction form
    91,407.16/137,113.77 = 31,435.04/x
  3. Step 3: Cross multiply
    91,407.16x = 137,113.77 × 31,435.04
  4. Step 4: Simplify right side
    91,407.16x = 4,310,176,844.50
  5. Step 5: Solve for x
    x = 4,310,176,844.50/91,407.16
  6. Step 6: Final answer
    x = 47,153.60

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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.