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Finding the Fourth Proportional to 70,452,000.80, 105,678,001.20 and 70,452,000.80

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Solution

The fourth proportional to 70,452,000.80, 105,678,001.20 and 70,452,000.80 is: 105,678,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,452,000.80 : 105,678,001.20 = 70,452,000.80 : x
  2. Step 2: Convert to fraction form
    70,452,000.80/105,678,001.20 = 70,452,000.80/x
  3. Step 3: Cross multiply
    70,452,000.80x = 105,678,001.20 × 70,452,000.80
  4. Step 4: Simplify right side
    70,452,000.80x = 7,445,226,625,084,801
  5. Step 5: Solve for x
    x = 7,445,226,625,084,801/70,452,000.80
  6. Step 6: Final answer
    x = 105,678,001.20

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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.