Home / 72,772,709.40-109,159,064.10-36,386,715.60

Finding the Fourth Proportional to 72,772,709.40, 109,159,064.10 and 36,386,715.60

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Solution

The fourth proportional to 72,772,709.40, 109,159,064.10 and 36,386,715.60 is: 54,580,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,772,709.40 : 109,159,064.10 = 36,386,715.60 : x
  2. Step 2: Convert to fraction form
    72,772,709.40/109,159,064.10 = 36,386,715.60/x
  3. Step 3: Cross multiply
    72,772,709.40x = 109,159,064.10 × 36,386,715.60
  4. Step 4: Simplify right side
    72,772,709.40x = 3,971,939,820,568,870
  5. Step 5: Solve for x
    x = 3,971,939,820,568,870/72,772,709.40
  6. Step 6: Final answer
    x = 54,580,073.40

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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.