Home / 30,740,101.72-42,440,905.02-19,154,685.40

Finding the Fourth Proportional to 30,740,101.72, 42,440,905.02 and 19,154,685.40

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Solution

The fourth proportional to 30,740,101.72, 42,440,905.02 and 19,154,685.40 is: 26,445,656.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,740,101.72 : 42,440,905.02 = 19,154,685.40 : x
  2. Step 2: Convert to fraction form
    30,740,101.72/42,440,905.02 = 19,154,685.40/x
  3. Step 3: Cross multiply
    30,740,101.72x = 42,440,905.02 × 19,154,685.40
  4. Step 4: Simplify right side
    30,740,101.72x = 812,942,183,749,380.75
  5. Step 5: Solve for x
    x = 812,942,183,749,380.75/30,740,101.72
  6. Step 6: Final answer
    x = 26,445,656.92

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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.