Home / 91,077.90-136,616.85-31,907.40

Finding the Fourth Proportional to 91,077.90, 136,616.85 and 31,907.40

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Solution

The fourth proportional to 91,077.90, 136,616.85 and 31,907.40 is: 47,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,077.90 : 136,616.85 = 31,907.40 : x
  2. Step 2: Convert to fraction form
    91,077.90/136,616.85 = 31,907.40/x
  3. Step 3: Cross multiply
    91,077.90x = 136,616.85 × 31,907.40
  4. Step 4: Simplify right side
    91,077.90x = 4,359,088,479.69
  5. Step 5: Solve for x
    x = 4,359,088,479.69/91,077.90
  6. Step 6: Final answer
    x = 47,861.10

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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.