Home / 30,516,816.47-42,088,850.79-20,073,558.02

Finding the Fourth Proportional to 30,516,816.47, 42,088,850.79 and 20,073,558.02

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Solution

The fourth proportional to 30,516,816.47, 42,088,850.79 and 20,073,558.02 is: 27,685,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,516,816.47 : 42,088,850.79 = 20,073,558.02 : x
  2. Step 2: Convert to fraction form
    30,516,816.47/42,088,850.79 = 20,073,558.02/x
  3. Step 3: Cross multiply
    30,516,816.47x = 42,088,850.79 × 20,073,558.02
  4. Step 4: Simplify right side
    30,516,816.47x = 844,872,988,328,187.75
  5. Step 5: Solve for x
    x = 844,872,988,328,187.75/30,516,816.47
  6. Step 6: Final answer
    x = 27,685,489.05

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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.