Home / 90,243.18-124,533.63-49,407.21

Finding the Fourth Proportional to 90,243.18, 124,533.63 and 49,407.21

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Solution

The fourth proportional to 90,243.18, 124,533.63 and 49,407.21 is: 68,180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,243.18 : 124,533.63 = 49,407.21 : x
  2. Step 2: Convert to fraction form
    90,243.18/124,533.63 = 49,407.21/x
  3. Step 3: Cross multiply
    90,243.18x = 124,533.63 × 49,407.21
  4. Step 4: Simplify right side
    90,243.18x = 6,152,859,209.47
  5. Step 5: Solve for x
    x = 6,152,859,209.47/90,243.18
  6. Step 6: Final answer
    x = 68,180.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.