Home / 72,750,788-100,396,096.08-40,155,748.64

Finding the Fourth Proportional to 72,750,788, 100,396,096.08 and 40,155,748.64

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Solution

The fourth proportional to 72,750,788, 100,396,096.08 and 40,155,748.64 is: 55,414,937.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,750,788 : 100,396,096.08 = 40,155,748.64 : x
  2. Step 2: Convert to fraction form
    72,750,788/100,396,096.08 = 40,155,748.64/x
  3. Step 3: Cross multiply
    72,750,788x = 100,396,096.08 × 40,155,748.64
  4. Step 4: Simplify right side
    72,750,788x = 4,031,480,398,625,769.50
  5. Step 5: Solve for x
    x = 4,031,480,398,625,769.50/72,750,788
  6. Step 6: Final answer
    x = 55,414,937.89

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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.