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Finding the Fourth Proportional to 30,185,999.40, 45,278,999.10 and 28,060,235.40

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Solution

The fourth proportional to 30,185,999.40, 45,278,999.10 and 28,060,235.40 is: 42,090,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,185,999.40 : 45,278,999.10 = 28,060,235.40 : x
  2. Step 2: Convert to fraction form
    30,185,999.40/45,278,999.10 = 28,060,235.40/x
  3. Step 3: Cross multiply
    30,185,999.40x = 45,278,999.10 × 28,060,235.40
  4. Step 4: Simplify right side
    30,185,999.40x = 1,270,539,373,422,388
  5. Step 5: Solve for x
    x = 1,270,539,373,422,388/30,185,999.40
  6. Step 6: Final answer
    x = 42,090,353.10

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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.