Home / 85,358,823.04-128,038,570.74-20,662,524.22

Finding the Fourth Proportional to 85,358,823.04, 128,038,570.74 and 20,662,524.22

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Solution

The fourth proportional to 85,358,823.04, 128,038,570.74 and 20,662,524.22 is: 30,993,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,358,823.04 : 128,038,570.74 = 20,662,524.22 : x
  2. Step 2: Convert to fraction form
    85,358,823.04/128,038,570.74 = 20,662,524.22/x
  3. Step 3: Cross multiply
    85,358,823.04x = 128,038,570.74 × 20,662,524.22
  4. Step 4: Simplify right side
    85,358,823.04x = 2,645,600,069,009,433
  5. Step 5: Solve for x
    x = 2,645,600,069,009,433/85,358,823.04
  6. Step 6: Final answer
    x = 30,993,867.71

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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.