Home / 90,838.87-136,258.34-40,909.66

Finding the Fourth Proportional to 90,838.87, 136,258.34 and 40,909.66

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Solution

The fourth proportional to 90,838.87, 136,258.34 and 40,909.66 is: 61,364.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,838.87 : 136,258.34 = 40,909.66 : x
  2. Step 2: Convert to fraction form
    90,838.87/136,258.34 = 40,909.66/x
  3. Step 3: Cross multiply
    90,838.87x = 136,258.34 × 40,909.66
  4. Step 4: Simplify right side
    90,838.87x = 5,574,281,816.37
  5. Step 5: Solve for x
    x = 5,574,281,816.37/90,838.87
  6. Step 6: Final answer
    x = 61,364.50

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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.