Home / 30,457,234.80-45,685,852.20-21,387,308.40

Finding the Fourth Proportional to 30,457,234.80, 45,685,852.20 and 21,387,308.40

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Solution

The fourth proportional to 30,457,234.80, 45,685,852.20 and 21,387,308.40 is: 32,080,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,457,234.80 : 45,685,852.20 = 21,387,308.40 : x
  2. Step 2: Convert to fraction form
    30,457,234.80/45,685,852.20 = 21,387,308.40/x
  3. Step 3: Cross multiply
    30,457,234.80x = 45,685,852.20 × 21,387,308.40
  4. Step 4: Simplify right side
    30,457,234.80x = 977,097,410,518,218.50
  5. Step 5: Solve for x
    x = 977,097,410,518,218.50/30,457,234.80
  6. Step 6: Final answer
    x = 32,080,962.60

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Similar ratio
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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.