Home / 30,571,232.64-42,172,221.34-18,172,507.02

Finding the Fourth Proportional to 30,571,232.64, 42,172,221.34 and 18,172,507.02

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Solution

The fourth proportional to 30,571,232.64, 42,172,221.34 and 18,172,507.02 is: 25,068,501.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571,232.64 : 42,172,221.34 = 18,172,507.02 : x
  2. Step 2: Convert to fraction form
    30,571,232.64/42,172,221.34 = 18,172,507.02/x
  3. Step 3: Cross multiply
    30,571,232.64x = 42,172,221.34 × 18,172,507.02
  4. Step 4: Simplify right side
    30,571,232.64x = 766,374,988,350,143.88
  5. Step 5: Solve for x
    x = 766,374,988,350,143.88/30,571,232.64
  6. Step 6: Final answer
    x = 25,068,501.40

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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.