Home / 80,903.64-121,272.14-30,970.12

Finding the Fourth Proportional to 80,903.64, 121,272.14 and 30,970.12

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Solution

The fourth proportional to 80,903.64, 121,272.14 and 30,970.12 is: 46,423.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,903.64 : 121,272.14 = 30,970.12 : x
  2. Step 2: Convert to fraction form
    80,903.64/121,272.14 = 30,970.12/x
  3. Step 3: Cross multiply
    80,903.64x = 121,272.14 × 30,970.12
  4. Step 4: Simplify right side
    80,903.64x = 3,755,812,728.46
  5. Step 5: Solve for x
    x = 3,755,812,728.46/80,903.64
  6. Step 6: Final answer
    x = 46,423.28

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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.