Home / 30,643,308-42,288,056.72-16,892,765.28

Finding the Fourth Proportional to 30,643,308, 42,288,056.72 and 16,892,765.28

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Solution

The fourth proportional to 30,643,308, 42,288,056.72 and 16,892,765.28 is: 23,312,176.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643,308 : 42,288,056.72 = 16,892,765.28 : x
  2. Step 2: Convert to fraction form
    30,643,308/42,288,056.72 = 16,892,765.28/x
  3. Step 3: Cross multiply
    30,643,308x = 42,288,056.72 × 16,892,765.28
  4. Step 4: Simplify right side
    30,643,308x = 714,362,216,318,286.75
  5. Step 5: Solve for x
    x = 714,362,216,318,286.75/30,643,308
  6. Step 6: Final answer
    x = 23,312,176.88

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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.