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Finding the Fourth Proportional to 83,058.40, 124,587.60 and 72,690.40

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Solution

The fourth proportional to 83,058.40, 124,587.60 and 72,690.40 is: 109,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,058.40 : 124,587.60 = 72,690.40 : x
  2. Step 2: Convert to fraction form
    83,058.40/124,587.60 = 72,690.40/x
  3. Step 3: Cross multiply
    83,058.40x = 124,587.60 × 72,690.40
  4. Step 4: Simplify right side
    83,058.40x = 9,056,322,479.04
  5. Step 5: Solve for x
    x = 9,056,322,479.04/83,058.40
  6. Step 6: Final answer
    x = 109,035.60

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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.