Home / 85,113.91-127,430.84-45,042.13

Finding the Fourth Proportional to 85,113.91, 127,430.84 and 45,042.13

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Solution

The fourth proportional to 85,113.91, 127,430.84 and 45,042.13 is: 67,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,113.91 : 127,430.84 = 45,042.13 : x
  2. Step 2: Convert to fraction form
    85,113.91/127,430.84 = 45,042.13/x
  3. Step 3: Cross multiply
    85,113.91x = 127,430.84 × 45,042.13
  4. Step 4: Simplify right side
    85,113.91x = 5,739,756,236.08
  5. Step 5: Solve for x
    x = 5,739,756,236.08/85,113.91
  6. Step 6: Final answer
    x = 67,436.17

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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.