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Finding the Fourth Proportional to 90,363.59, 124,702.47 and 50,078.01

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Solution

The fourth proportional to 90,363.59, 124,702.47 and 50,078.01 is: 69,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,363.59 : 124,702.47 = 50,078.01 : x
  2. Step 2: Convert to fraction form
    90,363.59/124,702.47 = 50,078.01/x
  3. Step 3: Cross multiply
    90,363.59x = 124,702.47 × 50,078.01
  4. Step 4: Simplify right side
    90,363.59x = 6,244,851,539.68
  5. Step 5: Solve for x
    x = 6,244,851,539.68/90,363.59
  6. Step 6: Final answer
    x = 69,108.05

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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.